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gemstone main cabochon creation
min data

Mineral: quartz
Gem: coyamito agate (cryptocrystalline)
Size: 16x47 mm & 23x43 mm
Carat: 23.7 ct & 26.8 ct
Cut: freeform cabochon
Origin: Mexico
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
Coyamito forms in nodules and is collected in Chihuahua Mexico. It is a nice banded fortification agate sometimes with hollow centers and small crystal druze. It takes a great polish and comes in a wide variety of colors. It is found about 40 miles form the more famous Laguna agate beds.

These cabs cut by author.