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being found in metamorphic and pegmatitic rock
A form of chalcedony made of quartz
These rocks are extremely common and make up a significant portion of Earth's crust
a phenomenon that occurs when light hits the chips of silica inside the gemstone and a rainbow of different colors refract inside the stone
Mined in: Madagascar
Botswana Agate 18mm A Grade Coin Cabochon New Jade being found in metamorphic andBotswana 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