Hyperitdiabas is one of the most outstanding minerals I have encountered in recent years. Its appearance striking beautiful and a […]

Hydrogrossular differs from the other garnets in that it is never transparent. It ranges from translucent to opaque. The most

Hurlbutite is an extremely rare mineral. Minute, colorless faceted stones have been cut from fragments.

Hureaulite can show rich and lively pink, rose, and orange colors. However, this collector’s gem is rarely cut.

Clinohumites and chondrodites can make beautiful gemstones with rich colors, but these members of the humite mineral group are rare

It should not be difficult to find numerous small faceted huebnerites among larger gemstone collections. Certainly ample material exists to

Howlite is always opaque in nodules; it is an abundant material and easy to acquire. Sometimes it contains black, threadlike

This mineral was first noted in 1937 but was not described in detail until 1971. It has not yet been

Hodgkinsonite is one of the rarest of all collector gems. Cut stones are bright and richly colored, but the crystals

Also known as the “cinnamon stone,” hessonite is the yellow-orange to reddish orange variety of grossular garnet. Hessonites can make