(Rainbow) Mayanite™
Commercial name for quartz with a natural iridescent layer of an iron oxide, probably goethite or limonite. Sole right to use the name Mayanite™ and…
Tag: iridescent
Anandalite™
Unregistered commercial name for natural quartz in which rainbow colors occur due to refraction of light on internal fracture surfaces. Other names used for quartz…
Ammolite
Commercial name for the iridescent or “opalescent” outer surface of fossilized shell of ammonites, primarily from the Bearpaw Formation in southern Alberta, Canada. Although the…
