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famed mineralogist and jeweler George Frederick Kunz
” It is one of the most sought-after minerals among gem and mineral collectors
Von Prehn discovered the stone in South Africa in 1774
Lapis was ground and processed to make the pigment ultramarine for use in frescoes and oil painting
Black Spinel 3mm Natural Round - 15-16 Inch Strawberry Quartz famed mineralogist and jeweler GeorgeSpinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not only has the dark color, but it is opaque as well, rendering its black especially deep and mysterious. Sometimes called the "Black Prince's Ruby" for its role in the English crown. It has been mistaken for ruby and sapphire at times, but can be distinguished by its structure and its lower relative hardness.