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…
Category: Gem or Scam? Library
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…
Amegreen™
Unregistered commercial name for banded amethyst (also called chevron amethyst) combined with prasiolite, a green transparent variety of macrocrystalline quartz (also improperly called green amethyst).…
Amazez™
Commercial name for banded amethyst, also called chevron amethyst. The name Amazez™ is an amalgamation of the names amethyst and Azeztulite™, referring to the white…
