Diamond is a colorless exceptionally hard mineral (but often tinted yellow, orange, blue, brown, or black by impurities), found in certain igneous rocks esp.
It is used as a gemstone, as an abrasive, and on the working edges of cutting tools. Composition: carbon. Formula: C.
Crystal structure: cubic. Name derived from the Greek adamas meaning invincible.
Earring means jewelry to ornament the ear; usually clipped to the earlobe or fastened through a hole in the lobe.
