3D Model: Perfectly Symmetrical Hexagonal Diamond With Six Identical Flat Facets On The Top And A Short Tapered Cone On The Bottom. Model Must Be A Single Watertight Mesh With No Visible Seams, Outlines, Or Artifacts. Surfaces Should Be Perfectly Flat And Smooth, With Sharp, Crisp Edges Where Facets Meet, No Rounding, No Bevels. The Bottom Cone Is Exactly Half The Height Of The Top Section And Ends In A Precise Sharp Point. Absolutely No Textures, Colors, Patterns, Engravings, Or UV Details — Only Pure Clean Geometry. Keep Proportions Precise And Consistent From All Angles, With Flawless Symmetry And No Distortion.