Although not well known, scapolite would make an attractive gem material for both jewelry enthusiasts and mineral collectors. It comes […]

Sarcolite is an extremely rare mineral. Tiny, colorless to “fleshy pink” gems have been cut only from material from one

Sapphirines are durable but very rare gemstones. Although named after their typically sapphire-blue color, these gems can occur in different

Few gems have held our attention over millennia as well as sapphire. The pure blue colors and excellent durability of

Sanidine is a mineral of volcanic rocks, rarely considered a gem. While occasionally brown or yellow, most examples are colorless.

Samarskite is a very heavy material from which lustrous black to brownish cabochons are sometimes cut as curiosities. The material

Although pearls are one of humanity’s most ancient gems, natural undersea beds of pearl-producing oysters now occur very rarely. Cultured

Though perhaps best known as inclusions within other gems, rutile crystals themselves can be faceted or cabbed as curiosities for

Discover everything about ruby gemstones — from value factors and origins to care tips. Learn what determines ruby prices and

Rubellites are tourmalines with reasonably saturated dark pink to red colors and medium to dark tones. They make excellent jewelry