Gemstones Encyclopedia

Clinochlore is a family of

Cobaltite cabochons can have a

Colemanite is an abundant mineral,

Any stone that changes color

Color change sapphires are those

Coral is the external skeleton

The crystal structure of cordierite

Next to diamond, corundum is

Although covellite has attractive blue

Probably fewer than a dozen

Lovely saffron-colored crocoite is quite

Typically colorless with a “sleepy”