Ghost agate/jasper
Commercial name for black and white striped or mottled rock of unknown composition and origin. Sometimes containing quartz, but does not appear to be a…
Category: Gem or Scam? Library
Water sapphire
A synonym for the mineral cordierite, especially the violet-blue cordierite of gem quality also called iolite. After its resemblance to sapphire. Do you have a…
Turitella (-agate/ jasper)
Turitella agate or simply Turitella has been the popular name for a brown, translucent, fossil-bearing chalcedony found in the Green River Formation of Wyoming, United…
Terraluminite™
Unregistered commercial name for a combination of quartz, pink feldspar and biotite (black mica), a combination we call geologically granite and reportedly found in Vermont.…
Turquenite / turquerenite
The original definition of “turquenite,” as used in the lapidary and mineral trade since the 1970s, is an artificially dyed blue variety of howlite or…
Stone of Life
Commercial name for serpentine with chrysotile (a fibrous mineral from the asbestos group). Also called Infinite™, Zebra jasper/stone, Swiss opal or Silver Eye (serpentine). By…
Tschermigite / čermíkite
Official mineral name for a naturally occurring ammonium-alum, with the chemical formula (NH₄)Al(SO₄)₂.12H₂O. Named after the place where the mineral was discovered, Tschermig (now Čermníky),…
Victoria Stone
Commercial name for an entirely man-made glassy material, mainly greenish-white in color with a cloud-like structure. This material is also called Chinese larimar or green…
Fire Azeztulite™
Unregistered commercial name for yet another new Azeztulite™ variant by Robert Simmons after he moved to New Zealand, cleverly capitalizing on the huge commercial success…
Thunder Egg (agate)
Mineralogical designation for a spherical- or geode-like structure, sometimes with a piece of parent rock (matrix) forming the outer zone of the thunder egg. This…
