Spinel
Spinel is a natural gemstone made of magnesium aluminum oxide. It rates 8 on the Mohs hardness scale and occurs in red, pink, purple, blue and color-change varieties. For centuries red spinel was mistaken for ruby, and it became an official August birthstone in 2016.
Spinel gemstones are prized for their vibrant colors, brilliance, and elegance. Our collection features high-quality spinel stone, striking black spinel, and stunning spinel ring designs. Explore premium spinel gem selections, including blue spinel, red spinel, and pink spinel.
Ideal for fine jewelry, custom designs, and gift pieces, our collection also includes exquisite spinel gemstone and spinel birthstone sets. Perfect for jewelers, collectors, and gemstone enthusiasts seeking luxurious and high-quality spinel pieces.
Spinel is often mistaken for ruby due to its red varieties — our ruby vs spinel guide explains the key differences in color, value, and identification.
Loose Spinel Buying Questions
Is spinel a natural gemstone?
Yes. Spinel is a naturally occurring mineral. Synthetic spinel also exists and has been used in jewelry for about a century, which is why a laboratory report that identifies a stone as natural matters.
Is spinel treated?
Spinel is treated far less often than ruby or sapphire. The treatment recorded for each stone, if any, is stated on its product page.
Is spinel hard enough for an engagement ring?
Yes. At 8 on the Mohs scale, spinel is hard enough for daily wear, slightly below sapphire and ruby at 9.























