Loose gemstone

Spinel

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Details

Carat: 1.03 ct
Dimensions: 7.7 x 5.5 x 3.3 mm
Cut: Oval Brilliant cut
Shape: Oval
Cutting style: Brilliant cut
Colour: Dusty Blue
Clarity: Slightly included
Treatment: Untreated
Origin: Tanzania - Tanga
Stone number: 7777

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· Mineralogy ·

blue Spinel

Blue spinel reveals elegant shades ranging from cool light blue to deep royal blue. With its crystalline brilliance, it appears fresh, modern, and clear.

Mohs hardness

cubic

Crystal system

1.712 - 1.736

Refractive index

Untreated

Natural stone

Properties

Mineral group: Spinel
Chemical formula: MgAl₂O₄
Colorant: iron (cobalt in cobalt-bearing stones)
Crystal system: cubic
Hardness (Mohs): 8
Density: approx. 3.58 - 3.61 g/cm³
Refractive index: 1.712 - 1.736
Optical character: isotropic (singly refractive)
Birefringence: none
Dispersion: 0.020
Pleochroism: none (isotropic)
Fluorescence: inert
Luster: vitreous

Why this stone

Rare, pure, and intensely colored - and as a cubic crystal without birefringence, it has a calm in the light that no sapphire shares.

Tradition

Blue spinel represents inner peace, clarity, and inspiration. It is said to promote mental alertness and emotional balance.

All pieces

Trilogy Ring with pink Spinel & white Topaz

Rings

US$ 151.00