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it lightens because of further weathering and becomes Malachite
It also serves as the Mohs hardness scale index mineral for a hardness of 8
African Jade is a complex Calcium Aluminum Silicate and is a Nephrite Jade
" an allusion to the moon-like white reflections of the mineral or to the quality of the light transmitted from the stone
often occurring with inclusions of white
Red Botswana Agate 10mm Round - 15-16 Inch Agate8mm it lightens because of furtherRed Botswana 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.
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