Gemology[38 from 103] Ruby Impregnation of prisms and small grains in the crystalline ruby quartz-biotite schists.
The name, a brief visual description:
Ruby
Impregnation of prisms and small grains in the crystalline ruby quartz-biotite schists.
Sample size:
Ore. 10,7х7х5 cm., 0,362 kg.
Place of sampling:
The field Makar-Ruz, the Polar Urals.