Ouro Verde (quartz)
Commercial name for a popular bright yellow/green variety of irradiated and heated smoky quartz. Thus the color is not natural, but treated by man. The…
Category: Gem or Scam? Library
Purple turquoise
Commercial name for a man-made product. These are usually natural pieces of turquoise from the Kingman Mine in Arizona that are crushed, dyed, stabilized and…
Pakulite™
Unregistered cmmercial name for a variety of rhyolite, a fine-grained spherulitic volcanic rock, usually with flow lines. Named for its site, Mount Paku in New…
Paraiba quartz
A commercial name for quartz with inclusions of the mineral gilalite. Named after the site of Paraiba, Brazil and thus not after the color of…
Peacock Ore
Commercial name for blue to multicolored chalcopyrite. Named for the colors of peacock feathers. Although these iridescent colors also occur in nature, most of the…
Perumar™
Unregistered commercial name for a rock of unknown composition from Peru, “newly” discovered in 2017 and first offered at the major mineral show in Tucson,…
Peruvian Quantum Quattro
Commercial name for a combination of quartz with malachite and chrysocolla from Peru. Marketed in 2019 as “a very different variety from the already known…
Picasso jasper/stone
Commercial name for a rock with gray and black stripes and occasional red lines or flecks. Associated with its abstract, modernist look with stripes and…
Pietersite
Name for a variety of chalcedony with embedded blue-gray, brown and yellow fibers of amphibole minerals (including crocidolite, an asbestos mineral) in various stages of…
Orca / Penguin agate
Commercial name for a dark gray to black agate or chalcedony with white spots or lines, usually offered from Madagascar. In some specimens, the white…
