how to facet
gemstone main cabochon creation
min data

Mineral: quartz
Gem: bull canyon agate (cryptocrystalline)
Size: 21x45 mm & 24x48 mm & 17x37 mm
Carat: 36.6 ct & 50.0 ct & 25.4 mm
Cut: freeform cabochon
Origin: Arizona
General Info: Agate (achates) was named from the river Achates, now the Drillo, in Sicily, where the stone was first identified. It is cryptocrystalline quartz (micro crystals) usually with a banded pattern (although not always).
Additional Information
Bull canyon is found in Arizona. It is a moss - tube agate with nice color and structure. It is similar to much of the horse canyon agate, with the moss forming kind of spiderweb like patterns. The moss comes in tan, red and some green colors. The background agate is translucent and there are some fortifications.

The cabs cut by the author.

Closeup of bull canyon agate Closeup of bull canyon agate