diff --git a/Speckle.DoubleNumerics.Tests/ConversionExtensionsTests.cs b/Speckle.DoubleNumerics.Tests/ConversionExtensionsTests.cs
new file mode 100644
index 0000000..06a46be
--- /dev/null
+++ b/Speckle.DoubleNumerics.Tests/ConversionExtensionsTests.cs
@@ -0,0 +1,222 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.Intrinsics;
+using Xunit;
+
+namespace Speckle.DoubleNumerics.Tests;
+
+public class ConversionExtensionsTests
+{
+  [Fact]
+  public void PlaneAsVector4Test()
+  {
+    var plane = new Plane(1, 2, 3, 4);
+    var vector4 = plane.AsVector4();
+    Assert.Equal(plane.Normal.X, vector4.X);
+    Assert.Equal(plane.Normal.Y, vector4.Y);
+    Assert.Equal(plane.Normal.Z, vector4.Z);
+    Assert.Equal(plane.D, vector4.W);
+  }
+
+  [Fact]
+  public void PlaneAsVector256Test()
+  {
+    var plane = new Plane(1, 2, 3, 4);
+    var vector256 = plane.AsVector256();
+    Assert.Equal(plane.Normal.X, vector256[0]);
+    Assert.Equal(plane.Normal.Y, vector256[1]);
+    Assert.Equal(plane.Normal.Z, vector256[2]);
+    Assert.Equal(plane.D, vector256[3]);
+  }
+
+  [Fact]
+  public void QuaternionAsVector4Test()
+  {
+    var quaternion = new Quaternion(1, 2, 3, 4);
+    var vector4 = quaternion.AsVector4();
+    Assert.Equal(quaternion.X, vector4.X);
+    Assert.Equal(quaternion.Y, vector4.Y);
+    Assert.Equal(quaternion.Z, vector4.Z);
+    Assert.Equal(quaternion.W, vector4.W);
+  }
+
+  [Fact]
+  public void QuaternionAsVector256Test()
+  {
+    var quaternion = new Quaternion(1, 2, 3, 4);
+    var vector256 = quaternion.AsVector256();
+    Assert.Equal(quaternion.X, vector256[0]);
+    Assert.Equal(quaternion.Y, vector256[1]);
+    Assert.Equal(quaternion.Z, vector256[2]);
+    Assert.Equal(quaternion.W, vector256[3]);
+  }
+
+  [Fact]
+  public void Vector2AsVector3Test()
+  {
+    var vector2 = new Vector2(1, 2);
+    var vector3 = vector2.AsVector3();
+    Assert.Equal(vector2.X, vector3.X);
+    Assert.Equal(vector2.Y, vector3.Y);
+    Assert.Equal(0, vector3.Z);
+  }
+
+  [Fact]
+  public void Vector2AsVector4Test()
+  {
+    var vector2 = new Vector2(1, 2);
+    var vector4 = vector2.AsVector4();
+    Assert.Equal(vector2.X, vector4.X);
+    Assert.Equal(vector2.Y, vector4.Y);
+    Assert.Equal(0, vector4.Z);
+    Assert.Equal(0, vector4.W);
+  }
+
+  [Fact]
+  public void Vector2AsVector256Test()
+  {
+    var vector2 = new Vector2(1, 2);
+    var vector256 = vector2.AsVector256();
+    Assert.Equal(vector2.X, vector256[0]);
+    Assert.Equal(vector2.Y, vector256[1]);
+    Assert.Equal(0, vector256[2]);
+    Assert.Equal(0, vector256[3]);
+  }
+
+  [Fact]
+  public void Vector3AsVector2Test()
+  {
+    var vector3 = new Vector3(1, 2, 3);
+    var vector2 = vector3.AsVector2();
+    Assert.Equal(vector3.X, vector2.X);
+    Assert.Equal(vector3.Y, vector2.Y);
+  }
+
+  [Fact]
+  public void Vector3AsVector4Test()
+  {
+    var vector3 = new Vector3(1, 2, 3);
+    var vector4 = vector3.AsVector4();
+    Assert.Equal(vector3.X, vector4.X);
+    Assert.Equal(vector3.Y, vector4.Y);
+    Assert.Equal(vector3.Z, vector4.Z);
+    Assert.Equal(0, vector4.W);
+  }
+
+  [Fact]
+  public void Vector3AsVector256Test()
+  {
+    var vector3 = new Vector3(1, 2, 3);
+    var vector256 = vector3.AsVector256();
+    Assert.Equal(vector3.X, vector256[0]);
+    Assert.Equal(vector3.Y, vector256[1]);
+    Assert.Equal(vector3.Z, vector256[2]);
+    Assert.Equal(0, vector256[3]);
+  }
+
+  [Fact]
+  public void Vector4AsQuaternionTest()
+  {
+    var vector4 = new Vector4(1, 2, 3, 4);
+    var quaternion = vector4.AsQuaternion();
+    Assert.Equal(vector4.X, quaternion.X);
+    Assert.Equal(vector4.Y, quaternion.Y);
+    Assert.Equal(vector4.Z, quaternion.Z);
+    Assert.Equal(vector4.W, quaternion.W);
+  }
+
+  [Fact]
+  public void Vector4AsPlaneTest()
+  {
+    var vector4 = new Vector4(1, 2, 3, 4);
+    var plane = vector4.AsPlane();
+    Assert.Equal(vector4.X, plane.Normal.X);
+    Assert.Equal(vector4.Y, plane.Normal.Y);
+    Assert.Equal(vector4.Z, plane.Normal.Z);
+    Assert.Equal(vector4.W, plane.D);
+  }
+
+  [Fact]
+  public void Vector4AsVector2Test()
+  {
+    var vector4 = new Vector4(1, 2, 3, 4);
+    var vector2 = vector4.AsVector2();
+    Assert.Equal(vector4.X, vector2.X);
+    Assert.Equal(vector4.Y, vector2.Y);
+  }
+
+  [Fact]
+  public void Vector4AsVector3Test()
+  {
+    var vector4 = new Vector4(1, 2, 3, 4);
+    var vector3 = vector4.AsVector3();
+    Assert.Equal(vector4.X, vector3.X);
+    Assert.Equal(vector4.Y, vector3.Y);
+    Assert.Equal(vector4.Z, vector3.Z);
+  }
+
+  [Fact]
+  public void Vector4AsVector256Test()
+  {
+    var vector4 = new Vector4(1, 2, 3, 4);
+    var vector256 = vector4.AsVector256();
+    Assert.Equal(vector4.X, vector256[0]);
+    Assert.Equal(vector4.Y, vector256[1]);
+    Assert.Equal(vector4.Z, vector256[2]);
+    Assert.Equal(vector4.W, vector256[3]);
+  }
+
+  [Fact]
+  public void Vector256AsPlaneTest()
+  {
+    var vector256 = Vector256.Create(1d, 2d, 3d, 4d);
+    var plane = vector256.AsPlane();
+    Assert.Equal(vector256[0], plane.Normal.X);
+    Assert.Equal(vector256[1], plane.Normal.Y);
+    Assert.Equal(vector256[2], plane.Normal.Z);
+    Assert.Equal(vector256[3], plane.D);
+  }
+
+  [Fact]
+  public void Vector256AsQuaternionTest()
+  {
+    var vector256 = Vector256.Create(1d, 2d, 3d, 4d);
+    var quaternion = vector256.AsQuaternion();
+    Assert.Equal(vector256[0], quaternion.X);
+    Assert.Equal(vector256[1], quaternion.Y);
+    Assert.Equal(vector256[2], quaternion.Z);
+    Assert.Equal(vector256[3], quaternion.W);
+  }
+
+  [Fact]
+  public void Vector256AsVector2Test()
+  {
+    var vector256 = Vector256.Create(1d, 2d, 0d, 0d);
+    var vector2 = vector256.AsVector2();
+    Assert.Equal(vector256[0], vector2.X);
+    Assert.Equal(vector256[1], vector2.Y);
+  }
+
+  [Fact]
+  public void Vector256AsVector3Test()
+  {
+    var vector256 = Vector256.Create(1d, 2d, 3d, 0d);
+    var vector3 = vector256.AsVector3();
+    Assert.Equal(vector256[0], vector3.X);
+    Assert.Equal(vector256[1], vector3.Y);
+    Assert.Equal(vector256[2], vector3.Z);
+  }
+
+  [Fact]
+  public void Vector256AsVector4Test()
+  {
+    var vector256 = Vector256.Create(1d, 2d, 3d, 4d);
+    var vector4 = vector256.AsVector4();
+    Assert.Equal(vector256[0], vector4.X);
+    Assert.Equal(vector256[1], vector4.Y);
+    Assert.Equal(vector256[2], vector4.Z);
+    Assert.Equal(vector256[3], vector4.W);
+  }
+}
diff --git a/Speckle.DoubleNumerics.Tests/ConverterTests.cs b/Speckle.DoubleNumerics.Tests/ConverterTests.cs
new file mode 100644
index 0000000..2f7bb48
--- /dev/null
+++ b/Speckle.DoubleNumerics.Tests/ConverterTests.cs
@@ -0,0 +1,33 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Text.Json;
+using Xunit;
+
+namespace Speckle.DoubleNumerics.Tests;
+
+public class ConverterTests
+{
+  [Fact]
+  public void PlaneConverterTest() => AssertRoundTrip(new Plane(1, 2, 3, 4));
+
+  [Fact]
+  public void Vector2ConverterTest() => AssertRoundTrip(new Vector2(1, 2));
+
+  [Fact]
+  public void Vector3ConverterTest() => AssertRoundTrip(new Vector3(1, 2, 3));
+
+  [Fact]
+  public void Vector4ConverterTest() => AssertRoundTrip(new Vector4(1, 2, 3, 4));
+
+  [Fact]
+  public void QuaternionConverterTest() => AssertRoundTrip(new Quaternion(1, 2, 3, 4));
+
+  private static void AssertRoundTrip<T>(T value)
+  {
+    var json = JsonSerializer.Serialize(value);
+    var deserialized = JsonSerializer.Deserialize<T>(json);
+    Assert.Equal(value, deserialized);
+  }
+}
diff --git a/Speckle.DoubleNumerics/ConversionExtensions.cs b/Speckle.DoubleNumerics/ConversionExtensions.cs
new file mode 100644
index 0000000..f137160
--- /dev/null
+++ b/Speckle.DoubleNumerics/ConversionExtensions.cs
@@ -0,0 +1,168 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#if NET6_0_OR_GREATER
+using System.Runtime.CompilerServices;
+using System.Runtime.Intrinsics;
+
+namespace Speckle.DoubleNumerics;
+
+/// <summary>
+/// Provides extension methods for converting between different numeric types.
+/// </summary>
+public static class ConversionExtensions
+{
+  // TODO: When targeting .NET 8 and above, we can use the new Unsafe.BitCast method to reinterpret types.
+
+  /// <summary>
+  /// Reinterprets a <see cref="Plane"/> as a new <see cref="Vector4"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Plane"/> to convert.</param>
+  /// <returns>A <see cref="Vector4"/> representation of the <see cref="Plane"/>.</returns>
+  public static Vector4 AsVector4(this Plane value) => Unsafe.As<Plane, Vector4>(ref value);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Plane"/> as a new <see cref="Vector256{Double}"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Plane"/> to convert.</param>
+  /// <returns>A <see cref="Vector256{Double}"/> representation of the <see cref="Plane"/>.</returns>
+  public static Vector256<double> AsVector256(this Plane value) => Unsafe.As<Plane, Vector256<double>>(ref value);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Quaternion"/> as a new <see cref="Vector4"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Quaternion"/> to convert.</param>
+  /// <returns>A <see cref="Vector4"/> representation of the <see cref="Quaternion"/>.</returns>
+  public static Vector4 AsVector4(this Quaternion value) => Unsafe.As<Quaternion, Vector4>(ref value);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Quaternion"/> as a new <see cref="Vector256{Double}"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Quaternion"/> to convert.</param>
+  /// <returns>A <see cref="Vector256{Double}"/> representation of the <see cref="Quaternion"/>.</returns>
+  public static Vector256<double> AsVector256(this Quaternion value) =>
+    Unsafe.As<Quaternion, Vector256<double>>(ref value);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector2"/> as a new <see cref="Vector3"/> with the new element zeroed.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector2"/> to convert.</param>
+  /// <returns><paramref name="value"/> reinterpreted as a new <see cref="Vector3"/> with the new element zeroed.</returns>
+  public static Vector3 AsVector3(this Vector2 value) => new(value, 0);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector2"/> as a new <see cref="Vector4"/> with the new elements zeroed.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector2"/> to convert.</param>
+  /// <returns><paramref name="value"/> reinterpreted as a new <see cref="Vector4"/> with the new elements zeroed.</returns>
+  public static Vector4 AsVector4(this Vector2 value) => new(value, 0, 0);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector2"/> as a new <see cref="Vector256{Double}"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector2"/> to convert.</param>
+  /// <returns>A <see cref="Vector256{Double}"/> representation of the <see cref="Vector2"/>.</returns>
+  public static Vector256<double> AsVector256(this Vector2 value) => value.AsVector4().AsVector256();
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector3"/> as a new <see cref="Vector2"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector3"/> to convert.</param>
+  /// <returns><paramref name="value"/> reinterpreted as a new <see cref="Vector2"/>.</returns>
+  public static Vector2 AsVector2(this Vector3 value) => value.AsVector256().AsVector2();
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector3"/> as a new <see cref="Vector4"/> with the new element zeroed.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector3"/> to convert.</param>
+  /// <returns><paramref name="value"/> reinterpreted as a new <see cref="Vector4"/> with the new element zeroed.</returns>
+  public static Vector4 AsVector4(this Vector3 value) => new(value, 0);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector3"/> as a new <see cref="Vector256{Double}"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector3"/> to convert.</param>
+  /// <returns>A <see cref="Vector256{Double}"/> representation of the <see cref="Vector3"/>.</returns>
+  public static Vector256<double> AsVector256(this Vector3 value) => value.AsVector4().AsVector256();
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector4"/> as a new <see cref="Quaternion"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector4"/> to convert.</param>
+  /// <returns>A <see cref="Quaternion"/> representation of the <see cref="Vector4"/>.</returns>
+  public static Quaternion AsQuaternion(this Vector4 value) => Unsafe.As<Vector4, Quaternion>(ref value);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector4"/> as a new <see cref="Plane"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector4"/> to convert.</param>
+  /// <returns>A <see cref="Plane"/> representation of the <see cref="Vector4"/>.</returns>
+  public static Plane AsPlane(this Vector4 value) => Unsafe.As<Vector4, Plane>(ref value);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector4"/> as a new <see cref="Vector2"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector4"/> to convert.</param>
+  /// <returns>A <see cref="Vector2"/> representation of the <see cref="Vector4"/>.</returns>
+  public static Vector2 AsVector2(this Vector4 value) => value.AsVector256().AsVector2();
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector4"/> as a new <see cref="Vector3"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector4"/> to convert.</param>
+  /// <returns>A <see cref="Vector3"/> representation of the <see cref="Vector4"/>.</returns>
+  public static Vector3 AsVector3(this Vector4 value) => value.AsVector256().AsVector3();
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector4"/> as a new <see cref="Vector256{Double}"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector4"/> to convert.</param>
+  /// <returns>A <see cref="Vector256{Double}"/> representation of the <see cref="Vector4"/>.</returns>
+  public static Vector256<double> AsVector256(this Vector4 value) => Unsafe.As<Vector4, Vector256<double>>(ref value);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector256{Double}"/> as a new <see cref="Plane"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector256{Double}"/> to convert.</param>
+  /// <returns>A <see cref="Plane"/> representation of the <see cref="Vector256{Double}"/>.</returns>
+  public static Plane AsPlane(this Vector256<double> value) => Unsafe.As<Vector256<double>, Plane>(ref value);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector256{Double}"/> as a new <see cref="Quaternion"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector256{Double}"/> to convert.</param>
+  /// <returns>A <see cref="Quaternion"/> representation of the <see cref="Vector256{Double}"/>.</returns>
+  public static Quaternion AsQuaternion(this Vector256<double> value) =>
+    Unsafe.As<Vector256<double>, Quaternion>(ref value);
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector256{Double}"/> as a new <see cref="Vector2"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector256{Double}"/> to convert.</param>
+  /// <returns>A <see cref="Vector2"/> representation of the <see cref="Vector256{Double}"/>.</returns>
+  public static Vector2 AsVector2(this Vector256<double> value)
+  {
+    ref byte address = ref Unsafe.As<Vector256<double>, byte>(ref value);
+    return Unsafe.ReadUnaligned<Vector2>(ref address);
+  }
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector256{Double}"/> as a new <see cref="Vector3"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector256{Double}"/> to convert.</param>
+  /// <returns>A <see cref="Vector3"/> representation of the <see cref="Vector256{Double}"/>.</returns>
+  public static Vector3 AsVector3(this Vector256<double> value)
+  {
+    ref byte address = ref Unsafe.As<Vector256<double>, byte>(ref value);
+    return Unsafe.ReadUnaligned<Vector3>(ref address);
+  }
+
+  /// <summary>
+  /// Reinterprets a <see cref="Vector256{Double}"/> as a new <see cref="Vector4"/>.
+  /// </summary>
+  /// <param name="value">The <see cref="Vector256{Double}"/> to convert.</param>
+  /// <returns>A <see cref="Vector4"/> representation of the <see cref="Vector256{Double}"/>.</returns>
+  public static Vector4 AsVector4(this Vector256<double> value) => Unsafe.As<Vector256<double>, Vector4>(ref value);
+}
+#endif
diff --git a/Speckle.DoubleNumerics/Plane.cs b/Speckle.DoubleNumerics/Plane.cs
index b3233fb..dff14b2 100644
--- a/Speckle.DoubleNumerics/Plane.cs
+++ b/Speckle.DoubleNumerics/Plane.cs
@@ -10,7 +10,7 @@ namespace Speckle.DoubleNumerics;
 /// <summary>
 /// A structure encapsulating a 3D Plane
 /// </summary>
-public struct Plane : IEquatable<Plane>
+public partial struct Plane : IEquatable<Plane>
 {
   /// <summary>
   /// The normal vector of the Plane.
diff --git a/Speckle.DoubleNumerics/Plane_Converter.cs b/Speckle.DoubleNumerics/Plane_Converter.cs
new file mode 100644
index 0000000..de6d42c
--- /dev/null
+++ b/Speckle.DoubleNumerics/Plane_Converter.cs
@@ -0,0 +1,80 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#if NET6_0_OR_GREATER
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Speckle.DoubleNumerics;
+
+[JsonConverter(typeof(PlaneJsonConverter))]
+public partial struct Plane;
+
+/// <summary>
+/// Converter for <see cref="Plane"/> to and from JSON.
+/// </summary>
+public class PlaneJsonConverter : JsonConverter<Plane>
+{
+  public override Plane Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+  {
+    if (reader.TokenType != JsonTokenType.StartObject)
+    {
+      throw new JsonException();
+    }
+
+    Vector3 normal = default;
+    double d = 0;
+
+    while (reader.Read())
+    {
+      if (reader.TokenType == JsonTokenType.EndObject)
+      {
+        return new Plane(normal, d);
+      }
+
+      if (reader.TokenType != JsonTokenType.PropertyName)
+      {
+        throw new JsonException();
+      }
+
+      var propertyName = reader.GetString();
+
+      reader.Read();
+
+      var comparison = options.PropertyNameCaseInsensitive
+        ? StringComparison.OrdinalIgnoreCase
+        : StringComparison.Ordinal;
+
+      if (string.Equals(propertyName, nameof(Plane.Normal), comparison))
+      {
+        var vectorConverter = (JsonConverter<Vector3>)options.GetConverter(typeof(Vector3));
+        normal = vectorConverter.Read(ref reader, typeof(Vector3), options);
+      }
+      else if (string.Equals(propertyName, nameof(Plane.D), comparison))
+      {
+        d = reader.GetDouble();
+      }
+      else
+      {
+        reader.Skip();
+      }
+    }
+
+    throw new JsonException();
+  }
+
+  public override void Write(Utf8JsonWriter writer, Plane value, JsonSerializerOptions options)
+  {
+    writer.WriteStartObject();
+    writer.WritePropertyName(ConvertName(nameof(value.Normal), options));
+    var vectorConverter = (JsonConverter<Vector3>)options.GetConverter(typeof(Vector3));
+    vectorConverter.Write(writer, value.Normal, options);
+    writer.WriteNumber(ConvertName(nameof(value.D), options), value.D);
+    writer.WriteEndObject();
+  }
+
+  private static string ConvertName(string name, JsonSerializerOptions options) =>
+    options.PropertyNamingPolicy?.ConvertName(name) ?? name;
+}
+#endif
diff --git a/Speckle.DoubleNumerics/Quaternion.cs b/Speckle.DoubleNumerics/Quaternion.cs
index a611bce..38bbff7 100644
--- a/Speckle.DoubleNumerics/Quaternion.cs
+++ b/Speckle.DoubleNumerics/Quaternion.cs
@@ -10,7 +10,7 @@ namespace Speckle.DoubleNumerics;
 /// A structure encapsulating a four-dimensional vector (x,y,z,w),
 /// which is used to efficiently rotate an object about the (x,y,z) vector by the angle theta, where w = cos(theta/2).
 /// </summary>
-public struct Quaternion : IEquatable<Quaternion>
+public partial struct Quaternion : IEquatable<Quaternion>
 {
   /// <summary>
   /// Specifies the X-value of the vector component of the Quaternion.
diff --git a/Speckle.DoubleNumerics/Quaternion_Converter.cs b/Speckle.DoubleNumerics/Quaternion_Converter.cs
new file mode 100644
index 0000000..5bd2215
--- /dev/null
+++ b/Speckle.DoubleNumerics/Quaternion_Converter.cs
@@ -0,0 +1,89 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#if NET6_0_OR_GREATER
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Speckle.DoubleNumerics;
+
+[JsonConverter(typeof(QuaternionJsonConverter))]
+public partial struct Quaternion;
+
+/// <summary>
+/// Converter for <see cref="Quaternion"/> to and from JSON.
+/// </summary>
+public class QuaternionJsonConverter : JsonConverter<Quaternion>
+{
+  public override Quaternion Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+  {
+    if (reader.TokenType != JsonTokenType.StartObject)
+    {
+      throw new JsonException();
+    }
+
+    double x = 0;
+    double y = 0;
+    double z = 0;
+    double w = 0;
+
+    while (reader.Read())
+    {
+      if (reader.TokenType == JsonTokenType.EndObject)
+      {
+        return new Quaternion(x, y, z, w);
+      }
+
+      if (reader.TokenType != JsonTokenType.PropertyName)
+      {
+        throw new JsonException();
+      }
+
+      var propertyName = reader.GetString();
+
+      reader.Read();
+
+      var comparison = options.PropertyNameCaseInsensitive
+        ? StringComparison.OrdinalIgnoreCase
+        : StringComparison.Ordinal;
+
+      if (string.Equals(propertyName, nameof(Quaternion.X), comparison))
+      {
+        x = reader.GetDouble();
+      }
+      else if (string.Equals(propertyName, nameof(Quaternion.Y), comparison))
+      {
+        y = reader.GetDouble();
+      }
+      else if (string.Equals(propertyName, nameof(Quaternion.Z), comparison))
+      {
+        z = reader.GetDouble();
+      }
+      else if (string.Equals(propertyName, nameof(Quaternion.W), comparison))
+      {
+        w = reader.GetDouble();
+      }
+      else
+      {
+        reader.Skip();
+      }
+    }
+
+    throw new JsonException();
+  }
+
+  public override void Write(Utf8JsonWriter writer, Quaternion value, JsonSerializerOptions options)
+  {
+    writer.WriteStartObject();
+    writer.WriteNumber(ConvertName(nameof(value.X), options), value.X);
+    writer.WriteNumber(ConvertName(nameof(value.Y), options), value.Y);
+    writer.WriteNumber(ConvertName(nameof(value.Z), options), value.Z);
+    writer.WriteNumber(ConvertName(nameof(value.W), options), value.W);
+    writer.WriteEndObject();
+  }
+
+  private static string ConvertName(string name, JsonSerializerOptions options) =>
+    options.PropertyNamingPolicy?.ConvertName(name) ?? name;
+}
+#endif
diff --git a/Speckle.DoubleNumerics/Vector2_Converter.cs b/Speckle.DoubleNumerics/Vector2_Converter.cs
new file mode 100644
index 0000000..862537a
--- /dev/null
+++ b/Speckle.DoubleNumerics/Vector2_Converter.cs
@@ -0,0 +1,77 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#if NET6_0_OR_GREATER
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Speckle.DoubleNumerics;
+
+[JsonConverter(typeof(Vector2JsonConverter))]
+public partial struct Vector2;
+
+/// <summary>
+/// Converter for <see cref="Vector2"/> to and from JSON.
+/// </summary>
+public class Vector2JsonConverter : JsonConverter<Vector2>
+{
+  public override Vector2 Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+  {
+    if (reader.TokenType != JsonTokenType.StartObject)
+    {
+      throw new JsonException();
+    }
+
+    double x = 0;
+    double y = 0;
+
+    while (reader.Read())
+    {
+      if (reader.TokenType == JsonTokenType.EndObject)
+      {
+        return new Vector2(x, y);
+      }
+
+      if (reader.TokenType != JsonTokenType.PropertyName)
+      {
+        throw new JsonException();
+      }
+
+      var propertyName = reader.GetString();
+
+      reader.Read();
+
+      var comparison = options.PropertyNameCaseInsensitive
+        ? StringComparison.OrdinalIgnoreCase
+        : StringComparison.Ordinal;
+
+      if (string.Equals(propertyName, nameof(Vector2.X), comparison))
+      {
+        x = reader.GetDouble();
+      }
+      else if (string.Equals(propertyName, nameof(Vector2.Y), comparison))
+      {
+        y = reader.GetDouble();
+      }
+      else
+      {
+        reader.Skip();
+      }
+    }
+
+    throw new JsonException();
+  }
+
+  public override void Write(Utf8JsonWriter writer, Vector2 value, JsonSerializerOptions options)
+  {
+    writer.WriteStartObject();
+    writer.WriteNumber(ConvertName(nameof(value.X), options), value.X);
+    writer.WriteNumber(ConvertName(nameof(value.Y), options), value.Y);
+    writer.WriteEndObject();
+  }
+
+  private static string ConvertName(string name, JsonSerializerOptions options) =>
+    options.PropertyNamingPolicy?.ConvertName(name) ?? name;
+}
+#endif
diff --git a/Speckle.DoubleNumerics/Vector3_Converter.cs b/Speckle.DoubleNumerics/Vector3_Converter.cs
new file mode 100644
index 0000000..77bf842
--- /dev/null
+++ b/Speckle.DoubleNumerics/Vector3_Converter.cs
@@ -0,0 +1,83 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#if NET6_0_OR_GREATER
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Speckle.DoubleNumerics;
+
+[JsonConverter(typeof(Vector3JsonConverter))]
+public partial struct Vector3;
+
+/// <summary>
+/// Converter for <see cref="Vector3"/> to and from JSON.
+/// </summary>
+public class Vector3JsonConverter : JsonConverter<Vector3>
+{
+  public override Vector3 Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+  {
+    if (reader.TokenType != JsonTokenType.StartObject)
+    {
+      throw new JsonException();
+    }
+
+    double x = 0;
+    double y = 0;
+    double z = 0;
+
+    while (reader.Read())
+    {
+      if (reader.TokenType == JsonTokenType.EndObject)
+      {
+        return new Vector3(x, y, z);
+      }
+
+      if (reader.TokenType != JsonTokenType.PropertyName)
+      {
+        throw new JsonException();
+      }
+
+      var propertyName = reader.GetString();
+
+      reader.Read();
+
+      var comparison = options.PropertyNameCaseInsensitive
+        ? StringComparison.OrdinalIgnoreCase
+        : StringComparison.Ordinal;
+
+      if (string.Equals(propertyName, nameof(Vector3.X), comparison))
+      {
+        x = reader.GetDouble();
+      }
+      else if (string.Equals(propertyName, nameof(Vector3.Y), comparison))
+      {
+        y = reader.GetDouble();
+      }
+      else if (string.Equals(propertyName, nameof(Vector3.Z), comparison))
+      {
+        z = reader.GetDouble();
+      }
+      else
+      {
+        reader.Skip();
+      }
+    }
+
+    throw new JsonException();
+  }
+
+  public override void Write(Utf8JsonWriter writer, Vector3 value, JsonSerializerOptions options)
+  {
+    writer.WriteStartObject();
+    writer.WriteNumber(ConvertName(nameof(value.X), options), value.X);
+    writer.WriteNumber(ConvertName(nameof(value.Y), options), value.Y);
+    writer.WriteNumber(ConvertName(nameof(value.Z), options), value.Z);
+    writer.WriteEndObject();
+  }
+
+  private static string ConvertName(string name, JsonSerializerOptions options) =>
+    options.PropertyNamingPolicy?.ConvertName(name) ?? name;
+}
+#endif
diff --git a/Speckle.DoubleNumerics/Vector4_Converter.cs b/Speckle.DoubleNumerics/Vector4_Converter.cs
new file mode 100644
index 0000000..7bf1f13
--- /dev/null
+++ b/Speckle.DoubleNumerics/Vector4_Converter.cs
@@ -0,0 +1,89 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#if NET6_0_OR_GREATER
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Speckle.DoubleNumerics;
+
+[JsonConverter(typeof(Vector4JsonConverter))]
+public partial struct Vector4;
+
+/// <summary>
+/// Converter for <see cref="Vector4"/> to and from JSON.
+/// </summary>
+public class Vector4JsonConverter : JsonConverter<Vector4>
+{
+  public override Vector4 Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+  {
+    if (reader.TokenType != JsonTokenType.StartObject)
+    {
+      throw new JsonException();
+    }
+
+    double x = 0;
+    double y = 0;
+    double z = 0;
+    double w = 0;
+
+    while (reader.Read())
+    {
+      if (reader.TokenType == JsonTokenType.EndObject)
+      {
+        return new Vector4(x, y, z, w);
+      }
+
+      if (reader.TokenType != JsonTokenType.PropertyName)
+      {
+        throw new JsonException();
+      }
+
+      var propertyName = reader.GetString();
+
+      reader.Read();
+
+      var comparison = options.PropertyNameCaseInsensitive
+        ? StringComparison.OrdinalIgnoreCase
+        : StringComparison.Ordinal;
+
+      if (string.Equals(propertyName, nameof(Vector4.X), comparison))
+      {
+        x = reader.GetDouble();
+      }
+      else if (string.Equals(propertyName, nameof(Vector4.Y), comparison))
+      {
+        y = reader.GetDouble();
+      }
+      else if (string.Equals(propertyName, nameof(Vector4.Z), comparison))
+      {
+        z = reader.GetDouble();
+      }
+      else if (string.Equals(propertyName, nameof(Vector4.W), comparison))
+      {
+        w = reader.GetDouble();
+      }
+      else
+      {
+        reader.Skip();
+      }
+    }
+
+    throw new JsonException();
+  }
+
+  public override void Write(Utf8JsonWriter writer, Vector4 value, JsonSerializerOptions options)
+  {
+    writer.WriteStartObject();
+    writer.WriteNumber(ConvertName(nameof(value.X), options), value.X);
+    writer.WriteNumber(ConvertName(nameof(value.Y), options), value.Y);
+    writer.WriteNumber(ConvertName(nameof(value.Z), options), value.Z);
+    writer.WriteNumber(ConvertName(nameof(value.W), options), value.W);
+    writer.WriteEndObject();
+  }
+
+  private static string ConvertName(string name, JsonSerializerOptions options) =>
+    options.PropertyNamingPolicy?.ConvertName(name) ?? name;
+}
+#endif