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mined since 4000 BCE
This Phantom Quartz is gray
It's defined by a bright green color
a silicate of calcium and magnesium -- from western Canada
Botswana Agate 18mm A Grade Coin Cabochon New Jade mined since 4000 BCEBotswana 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