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Howlite can be easily dyed and is often treated to be blue for use as a substitute for turquoise
then brought to the surface by volcanoes and earthquakes
After the glass has cooled
Composed mostly of tiger's eye
It is a product of nature
Multi Spinel 3mm Faceted Round AA Grade - 15-16 Inch Puff Square Howlite can be easily dyedSpinel 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.