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.
No, not all have glassy luster
When it is polished. Gemstones are rarely glassy when they're rough.
Carbon: diamond, graphite, glassy graphite, graphene, fullerene etc.
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.
Elongate glassy perchlet was created in 1822.
Glassy-winged sharpshooter was created in 1821.
Obsidian is an extrusive rock that cooled very rapidly without forming crystals. As a result, obsidian has a smooth, shiny texture of a thick piece of glass.