Lulu AmaniOlten · Suisse

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Korund - Rubin

Loose gemstone

Corundum - Ruby

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Details

Carat: 0.93 ct
Dimensions: 4.9 x 4.9 x 3.2 mm
Cut: Emerald cut
Shape: Octagon
Cutting style: Step cut
Colour: Deep Berry
Clarity: Moderately included
Treatment: Untreated
Origin: Tanzania - Winza
Stone number: 7927.001

· Mineralogy ·

Ruby

The ruby shines in vibrant red, from bright carmine to deep blood red. It embodies passion, strength, and timeless beauty.

9

Mohs hardness

trigonal

Crystal system

1.762 - 1.770

Refractive index

Untreated

Natural stone

Properties

Mineral group: Corundum
Chemical formula: Al₂O₃
Colorant: chromium
Crystal system: trigonal
Hardness (Mohs): 9
Density: approx. 4.0 g/cm³
Refractive index: 1.762 - 1.770
Optical character: anisotropic, uniaxial negative
Birefringence: 0.008 - 0.010
Dispersion: 0.018
Pleochroism: distinctly dichroic: purplish red / orangey red
Fluorescence: strong red (long-wave UV)
Luster: vitreous

Why this stone

For centuries, the ruby has been considered one of the most precious gemstones in the world - a symbol of luxury, power, and everlasting beauty.

Tradition

The ruby symbolizes love, passion, and vitality. It is said to bring joy, strengthen the heart, and activate life energy.

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