Black Spinel 20x25mm Faceted Nugget Pendant Stone Type_Rhodochrosite This semi to translucent stone

This semi to translucent stone occurs in an array of hues

“Butter” suggests qualities of smoothness

Unlike other forms of opal

Some facts about Opals

When they're dry

Black Spinel 20x25mm Faceted Nugget Pendant Stone Type_Rhodochrosite This semi to translucent stoneSpinel 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.