Glassy may be one word you could use to describe a diamond gemstone.
a vitreous luster (eg. diamond [C] or rutile [TiO2])
a hardness test, because nothing can scratch a diamond.
It is glassy.
Carbon: diamond, graphite, glassy graphite, graphene, fullerene etc.
A rough diamond is typically identified by its shape, surface texture, and luster. It may appear as a rough, uncut stone with a glassy surface and a crystalline structure. Gemologists can also use specialized equipment like a loupe or magnifying glass to examine the diamond's characteristics further.
When it is polished. Gemstones are rarely glassy when they're rough.
Ruby (corundum) has a vitreous or glassy luster.
Classy rhymes with glassy! Really? that's your question? wow.
Indian glassy fish was created in 1822.
Glassy-winged sharpshooter was created in 1821.
Elongate glassy perchlet was created in 1822.
Calcite typically exhibits a vitreous or glassy luster.