Strawberry quartz
Commercial name for red- to pink-colored quartz with hematite inclusions or man-made glass. Originally, this name was used in the 19th century for quartz with…
Category: Gem or Scam? Library
Afghanistan/Afghan jade
Misleading commercial name for the mineral bowenite, a variety of antigorite, a mineral from the serpentine group. So it is not jade, but is sold…
African jade
Misleidende commerciële naam voor een massieve variëteit van grossulaar, een groen mineraal uit de granaatgroep. Vernoemd naar het voorkomen in Afrika en gebruikt als een…
African turquoise
Commercial name for a variety of jasper mined in Africa and often treated to make the blue-green color resemble that of true turquoise. The stone…
Agate
Name for a distinctly striped or banded chalcedony. Originally found in the river Dirillo (formerly Achates) in Sicily, Italy, from which the name is derived.…
Agape Crystal®
Registered trademark used for material said to contain the following combination of minerals: quartz, smoky quartz, rutile quartz, amethyst, goethite, lepidocrocite and cacoxenite. A combination…
Agni Manitite
Commercial name for rounded pebbles of obsidian found in rivers around Malamingan, Sumatra, Indonesia. These water-rolled obsidian fragments are usually dark, almost black, but show…
Agnitite™
Unregistered commercial name for clear to milky white quartz with red to reddish-brown inclusions of hematite, mainly from Madagascar. The word “Agni” means fire in…
Alligator quartz
Synonym for so-called jacaré quartz, a growth form of quartz (usually smoky quartz) with many parallel crystal faces (bulges). Jacaré quartz is named after the…
