Botswana Agate 14-25mm Nugget Top Drill - 15-16 Inch R0048 The shell is often found

The shell is often found naturally polished with a green or brown spiral on one side and a white "eye" on the other

however they are not currently sourced from this region

Tibet and other Asian countries

golden tan

Botswana Agate 14-25mm Nugget Top Drill - 15-16 Inch R0048 The shell is often foundBotswana Agate displays highly defined parallel banding, usually in white on hues of brown, gray, pink, tan, apricot and purplish red. Botswana Agate was formed nearly 187 million years ago by lava flowing in waves from long faults in the earth. This lava rolled across the landscape, depositing layer upon layer of Quartz silicate to create the banding and patterns now prized in Botswana Agate.