Botswana Agate 14-25mm Nugget Top Drill - 15-16 Inch R0048 Sardonyx has a Sard base

Sardonyx has a Sard base

from translucent to opaque

due to exposure to different temperatures during its formation

creating a beautiful blend of pink and green in mottled patterns

This material is actually Serpentine

Botswana Agate 14-25mm Nugget Top Drill - 15-16 Inch R0048 Sardonyx has a Sard baseBotswana 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.