Spinel 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...
Spinel 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...
Sardonyx has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is not Onyx, but rather a dark variety of Carnelian. Sardonyx...
Hypersthene is often categorized as enstatite or ferrosilite, but its identity is complicated. Pure enstatite contains no iron, and pure ferrosilite contains no magnesium, but hypersthene contains a significant amount...
Spinel 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...
Hypersthene is often categorized as enstatite or ferrosilite, but its identity is complicated. Pure enstatite contains no iron, and pure ferrosilite contains no magnesium, but hypersthene contains a significant amount...
Black Opal is a naturally occurring variety of precious opal mined in Australia. this opal variety is characterized by their dark base tone. It is mined under extremely harsh conditions...
Spinel 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...
Spinel 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...