What is Spinel?


Spinel is a mineral that comes in a variety of colors, including red, blue, and green. It’s primarily found in Sri Lanka, Myanmar, and Vietnam. Spinel is often used as a gemstone and is popular for its vibrant colors and its use in royal jewelry.

Spinel is a colorful gemstone that comes in shades of red, blue, and green. Its vibrant hues and historical significance in royal jewelry make it a popular choice for rings, pendants, and other ornamental uses.

Gemstone Properties

Chemical ClassificationInorganic - Oxide (Spinel group)
ColorComes in a variety of colors including red, blue, pink, black, and violet among others.
TransparencyTypically transparent, but some varieties can be opaque.
OccurrenceMyanmar (Burma), Sri Lanka, and Tajikistan.
FormationSpinel is found in marble and is also associated with some igneous rocks.
Mohs Hardness8
Specific GravityApproximately 3.58 - 3.61.
Diagnostic PropertiesVarious colors, octahedral crystals.
Chemical CompositionMgAl2O4
PleochroismTypically not observable in Spinel.
Crystal SystemIsometric/Cubic
Optical PropertiesIsotropic
Refractive Index1.712 - 1.736
BirefringenceNone (isotropic)
2V angleNot applicable (isometric)