API Reference > imodeljs-common > Geometry > MaterialProps MaterialProps Interface Override SubCategoryAppearance.materialId for subsequent surface and solid geometry. see GeometryStreamEntryProps Properties Name Type Description materialId undefined | Id64String Material id to use, specify an invalid Id64 to override SubCategoryAppearance.materialId with no material. Defined in core/common/src/geometry/GeometryStream.ts Line 86 Last Updated: 13 June, 2024