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blue or gray
red jasper and black hematite
the resulting rock is dark gray to deep black in color and riddled with pits and holes where air was trapped in the stone
a mineralogist and jeweler
they each have a beautiful look and shape
Black Tourmaline 7x8mm Faceted Swirl Oval - 15-16 Inch mixed stone blue or grayBlack Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins. Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to dark. It can even exhibit various colors within the same specimen. Its name derives from the Sinhalese word turamali, which translates to stone of many colors. Due to