Botswana Agate 16mm A Grade Coin Cabochon Mandrel It is believed by some

It is believed by some to improve memory and increase analytical skills

black or brown veins running through it in web-like patterns

depositing copper and other elements that gradually develop into turquoise

the third to hardest common natural gemstone

Botswana Agate 16mm A Grade Coin Cabochon Mandrel It is believed by someBotswana 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. Sold individually. These cabochons are all unique and vary