Do NOT expect to get anything close to the preview renders from the included textures. The previews are Cycles beauty shots made with a shader setup that is NOT included in the package. What you actually get is a diffuse map and a transmission map that are both near-white — plug them in as-is and every crystal comes out flat plaster-white. To get anything resembling the promo images I had to build a custom translucent material completely from scratch (own tint, fresnel, IOR, opacity logic). The textures provided are essentially useless. The mesh is also nowhere near game-ready. The "single" crystal cluster is actually 180+ disconnected geometry islands glued into one object. Rock base and crystals share one material slot, so you can't even make crystals translucent without editing the mesh in Blender yourself. Any destruction workflow (UE Fracture / Geometry Collection) explodes it into hundreds of junk fragments because of those loose parts — I had to manually rebuild the mesh in Blender to make it usable. Bottom line: the author rendered pretty pictures and is selling the pictures. The actual content requires hours of manual fixing in Blender and a full custom shader to be usable. Not recommended.