Although transparent dolomite crystals are fairly abundant and popular collector’s items, faceted gems are soft, fragile, and rarely seen in […]

Dioptase has a beautiful, emerald-like green color. Although this mineral isn’t rare, gems are seldom faceted because of a paucity

Violane has been used for beads and inlay—transparent material is always very tiny. The color of this material is deep

This mineral is seldom even mentioned in the gem literature because it is so rare and has been so seldom

Diaspore is hard enough to make a durable jewelry stone, but the typical light brownish color is not easy to

Diamond is the most romanticized and heavily marketed of all gemstones. Nearly every jewelry establishment handles diamonds, even if it

One of the rarest garnet varieties, demantoid can have a green color that rivals emerald and a fire that exceeds

Polished and sliced datolite nodules can show off very attractive colors. Datolite is a popular collector’s mineral, but faceted and

A very durable gemstone, danburite is an excellent choice for jewelry use. Although the mineral isn’t rare, large facetable pieces

One of the rarest of all facetable gems, cut cuprites can show magnificent deep red color. However, these beautiful stones