Iris quartz
Fantasy name for natural quartz in which rainbow colors occur due to refraction of light on internal fracture surfaces. This effect is also called iridescence,…
Category: Gem or Scam? Library
Isis calcite™
A commercial, unregistered trade name for a calcite native to the Sahara Desert. The material offered under this name is usually light yellow in color.…
Jacaré quartz
Name used for a growth form of quartz (usually smoky quartz) with many parallel crystal faces (bulges or intergrowths). Named after the Portuguese word “jacaré”…
Jade
The name jade is unfortunately common in this library. Jade has traditionally been a beloved and valuable ornamental stone. By using the name for similar…
Jadine
Misleading commercial name for Australian chrysoprase (a green variety of chalcedony). So again, this is not real jade, but the name is used to better…
Jasper
Mineralogical name for a variety of chalcedony, which in turn is a microcrystalline variety of quartz. Geologically, the name has long been used for an…
Jungle jasper/serpentine
Commercial name for a green with brown serpentine containing rock, primarily offered from Pakistan. Contains bright green lines and spots in a light brown matrix…
Kabamba / Kambaba – jasper/stone
Commercial name for a gray-green to blue-green rhyolite rock with dark “eyes,” from Norcross, central Madagascar. It is thus not a jasper variety. There are…
Cat’s eye / bull’s eye
Commercial name for a red to reddish-brown variety of tiger’s eye, also called Dragon’s Eye, bull’s eye or preferably red tiger’s eye. Red tiger’s eye…
Kaurilite™
Unregistered commercial name for an amber-like substance. So named by Robert Simmons (Heaven & Earth). It is a fossilized or semi-fossil resin from the ancient…
