Multi Spinel 3mm Table Cut Cube - AA Grade - 15-16 Inch With Matrix Many stones in the Russian

Many stones in the Russian crown jewels from the 17th century which were thought to be rubies are actually red Tourmaline

Hematite is black to steel-gray or silver-gray

meaning it becomes magnetically charged from heat or friction

Makes 3 sizes of rings: 7x9 mm / 0

Opalite is the trade name for man to made glass treated to exhibit the internal flashes of true Opals in translucent samples

Multi Spinel 3mm Table Cut Cube - AA Grade - 15-16 Inch With Matrix Many stones in the RussianSpinel 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.