how to facet
gemstone main cabochon creation
min data

Mineral: quartz
Gem: keegan ranch agate (cryptocrystalline)
Size: 29x46 mmm & 21x38 mm
Carat: 71+ ct & 50+ ct
Cut: cabochon
Origin: Oregon
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
The Keegan ranch agate is also a tube agate similar to Ochoco lace. It is found on the Keegan Ranch in central Oregon. It tends to be a bit more wispy (than the Ochoco Lace) and comes in a translucent base. Like the other tube agaes I tend to cut it using a backing material to provide more contrast between the tubes and the background base.

All cabochons cut by the author. They are mounted on black agate as douiblets.