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Dumortierite is an aluminum borosilicate mineral that varies in color from blue
Ancient Cellar Red Agate is a natural agate that is dyed and heated to give it the unique color and pattern we call Ancient Cellar
having been worn by shamans
The presence of Manganese within the stone produces the purple hue
potassium or barium
Madagascar Green Dendritic Opal 8mm Round - 15-16 Inch 9mm Dumortierite is an aluminum borosilicateThis variety of opal is named "dendritic" for the small inclusions within it that resemble moss or ferns. These inclusions consist of iron, manganese and other metallic oxides captured during the forming of the rock. Opals are hydrated amorphous forms of silica, created when silica hardens within the fissures of other stones.
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