Snakeskin agate
Commercial name used for various stones. There is a brown, gray or cream colored chalcedony or agate on the market in which the white outer…
Category: Gem or Scam? Library
Tangerine quartz / Tangerine Lemurian
Unregistered commercial name for orange (pink) quartz, usually from Brazil or Madagascar. The color is caused by inclusions or a natural coating of hematite or…
Tanzurine™ (Cherry and Emerald)
Commercially registered trademark for quartz(ite) with inclusions from Tanzania, in red (Cherry Tanzurine™) and green (Emerald Tanzurine™). This “new find” was first offered at the…
Feldspar Zebra / Zebradorite
Commercial name for a rock composed of intergrown light-colored potassium feldspar and dark quartz, often referred to geologically as graphic granite. The angular intergrowth is…
Terahertz stone
Commercial fantasy name and trade term for a man-made product with an appearance similar to hematite or magnetite, especially in polished form. Said to be…
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…
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…
