Seamless PBR material of the white quartz was created in Substance Designer 14.1.1

Include PNG 4096*4096 maps: BaseColor, Roughness, Metallic, Height, Normal, Ambient Occlusion, ScatteringColor, ScatteringMask

Subsurface Scattering is used in the preview render.

The .sbs and .sbsar files with PBR material for Substance Painter and Substance Designer are also included.