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where iron and other minerals contribute to its unique color variations and patterns
Each 8mm bead is polished smooth with occasional hints of lighter calcite and fine pyrite inclusions
The smoky color results from natural radiation affecting trace aluminum within the quartz structure over millions of years
aragonite develops in a variety of fascinating habits
Found in regions such as Arizona and Indonesia
Black Tourmaline in Quartz/Feldspar | Brazil dendrite where iron and other mineralsA classic Brazilian pegmatite specimen featuring black tourmaline crystals embedded within a matrix of quartz and feldspar. The glossy, striated tourmaline provides a striking contrast against the lighter surrounding minerals, highlighting the diverse crystal growth that occurs in pegmatite environments. This item is 4. 5 x 2 x 2 and weighs 1 lb 11. 6 oz
US$ 50.00
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