diamond (gem)

Diamond is a gemstone, a crystalline form of elemental carbon. It is rare, extremely hard and immensely valuable. It is often used in jewelry, but as the hardest natural substance, 10 on the Mohs scale, it is also widely used in tools, usually grinders, drills, saws, and blades.

This tag implicates gem (learn more).

Posts (view all)

post #5208963
↑6♥6C0S
post #5197532
↑4♥5C0S
post #5191810
↑30♥34C2Q
post #5189319
↑17♥35C0E