Witches broom kyanite
Commercial fantasy name for the fan-shaped aggregates of black kyanite that resemble a witches’ broom. Also called broom kyanite or Witch broom kyanite. Increasingly, these…
Category: Gem or Scam? Library
Witches fingers (quartz)
This designation is used for different forms of quartz. Long on the market under this commercial fancy name are tapered crystals (Tessin habit) of smoky…
Helenite / Mount St. Helens obsidianite
Commercial name for man-made glass incorporating volcanic ash from Mount St. Helens and marketed as a gemstone. Helenite first formed by accident after the eruption…
Hematite
Official mineral name for an iron oxide. Hematite has many different appearances: it can occur in reddish-brown to ochre-colored masses, dark silver-gray scaly masses, silver-gray…
Herkimer diamond
Local name for clear double-terminated quartz crystals with high brilliance from Herkimer Co., New York and surrounding areas, United States. Herkimer diamonds have been popular…
Hematite or hematoid quartz
Designation for quartz with inclusions of iron or hematite giving it a reddish-pink appearance. Also called ferruginous quartz in English. Nowadays this accurate name is…
Hickorite / Hickoryite
Fancy commercial name for a banded variety of rhyolite, a volcanic rock, from near Rodeo, Durango, Mexico. It was introduced into commerce in 2008 as…
Hyacinth crystal/stone
Fancy commercial name for quartz (or sometimes glass) with a variety of internal fractures/cracks in various colors, usually as polished tumble stones. In addition to…
Ice quartz
Commercial name for natural quartz with intermittent or interfered growth, native to the Himalayas. The crystals have irregular shapes and often only partial crystal faces.…
Iceland Spar
Name for an optically clear form of calcite, usually in the shape of cleaved parallelepipeds or rhombohedral (diamond-shaped) cleavage crystals. Named for the country where…
