Recordkeeper
Esoteric designation for triangular patterns on one or more crystal surfaces. Initially so called only in quartz, but more and more also in other minerals…
Category: Gem or Scam? Library
Red Fire Azeztulite™
Unregistered commercial name for an opaque, deep red form of “azeztulite” said to occur only in New Zealand. Based on photographs of the material, this…
Red Healer
Commercial name given to quartz with red inclusions of hematite. Golden Healer already existed for quartz with yellow limonite and for some time now Red…
Rainbow calcite
Commercial name for a white-red-brown-green banded calcite, often with black or dark brown layers, from Mexico. Colors are mainly caused by inclusions of iron. Similar…
Rainbow garnet
Commercial name for an iridescent variety of andradite or grossulary-andradite (also called grandite). Specimens of iridescent garnet were first collected in 1934 in the Adelaide…
Rainbow quartz
Commercial name for natural quartz in which rainbow colors occur due to refraction of light on internal fracture surfaces. Other names used for quartz with…
Rainbow moonstone
Commercial name for white feldspar with a form of blue or multi-colored ‘flash’ or pearlescent luster. Rainbow moonstone is perhaps the most popular ‘moonstone’ currently…
Rainbow obsidian
Commercial name for natural black volcanic glass with multicolored iridescence caused by inclusions of nanoparticles of the mineral hedenbergite. Rainbow obsidian is often cut such…
Rainforest jasper/rhyolite
Commercial name for a predominantly green volcanic rock with brown and orange spots in round structures. The rock is a rhyolite and not a jasper…
Rhodatrolite
Commercial name for a pink variety of the mineral natrolite, from a site on the island of Nusa Kambangan, off the south coast of central…
