Pruskite
Trade name for lab-grown crystals on matrix, usually made in Poland. The crystals can be either yellow (potassium hexacyanoferrate, containing divalent iron) or red (potassium…
Trade name for lab-grown crystals on matrix, usually made in Poland. The crystals can be either yellow (potassium hexacyanoferrate, containing divalent iron) or red (potassium…
Trade name name for a dense, fine-grained, pure white variety of magnesite from a site on the Utah-Nevada border in the United States. Unclear whether…
Unregistered commercial name for material allegedly composed of the following mineral combination: amethyst, smoky quartz and cacoxenite. Another variation of Agape crystal® and related names…
Commercial name for a combination of (smoky) quartz with chrysocolla, malachite, shattuckite and dioptase from Namibia. In the examples studied, the quartz, chrysocolla, malachite and…
Misleading commercial name for a red and white banded calcite; the stone contains no jasper or quartz at all. Inclusions of probably iron in the…
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…
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…
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…
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…
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…
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