Spinelle (noir) - Lot de 4 Saphir / Sapphire it can also be oval

it can also be oval

This quartz contains pretty blue inclusions which appear as floating clouds and give texture and depth to the stone

although its color play is absolutely dramatic given its dark background

Hardness: 6

in addition to being the birthstone for the month of November

Spinelle (noir) - Lot de 4 Saphir / Sapphire it can also be ovalSpinel is an increasingly popular gemstone. It has a high luster and it comes in a wide variety of colors like red, blue, purple, pink, and black. It has a high hardness (8 on the Mohs scale) and its chemical composition is very close to that of corundum (ruby and sapphire). Since 2016, spinel has been added to peridot as the birthstone for August. Black spinels are a dazzling black and are often used in jewelry. Variety: Spinel Black color