Blue Spinel: The Ultimate Guide to Meaning, Properties, Uses
When most women consider blue engagement rings, they are under the belief that each one the stones topping a jewel of the type is sapphires. That’s a fair and justified…
Black Spinel: Meaning, Properties & Uses
Black spinel is a gemstone made of magnesium oxide and magnesium-aluminum oxide. It is one of the rarest and most valuable gemstones. At the same time, it is one of…