This stone comes in at a nine on the Mohs Hardness Scale, so it’s quite hard. Instead, Black Sapphire tends to absorb the light around it, kind of like what happens with a black hole in space. Black Sapphire generally has a translucent to opaque appearance, and unlike other stones, it does not reflect light. Geologically speaking, Black Sapphire is an aluminum oxide that gets its unique color from the impurities that are contained within the stone, and these impurities are often minerals such as iron or titanium.
Black Sapphire, like all variations, is a variety of a mineral called corundum.
But interestingly enough, Sapphires can be found in several different colors. Blue Sapphire is definitely not the type that most people think of when they think of this kind of stone. If you’ve never heard of Black Sapphire, you’re not alone.
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