One of a kindLoose Faceted Gemstone
Purple Corundum 5.5ct Cushion Cut
- Weight
- 5.5 ct
- Cut
- Cushion
- Colour
- Purple
- Origin
- Pakistan
- Ships from
- Pakistan
- Treatment
- See listing
$194.00$35.27/ct
Collection
Natural Corundum
Purple corundum is purple sapphire under a more cautious trade name. The material offers Mohs 9 durability and genuine rarity at a fraction of blue sapphire pricing.
- In stock
- 4
- From
- $77.50
- To
- $194.00
- Mohs hardness
- 9
One of a kind
One of a kindLoose Faceted Gemstone
Purple Corundum 3.35ct Cushion Cut
- Weight
- 3.35 ct
- Cut
- Cushion
- Colour
- Purple
- Origin
- Pakistan
- Ships from
- Pakistan
- Treatment
- See listing
$129.50$38.66/ct
One of a kindLoose Faceted Gemstone
Purple Corundum 2.75ct Emerald Cut
- Weight
- 2.75 ct
- Cut
- Emerald Cut
- Colour
- Green
- Origin
- Pakistan
- Ships from
- Pakistan
- Treatment
- See listing
$77.50$28.18/ct
One of a kindLoose Faceted Gemstone
Purple Corundum 2.75ct Oval Cut
- Weight
- 2.75 ct
- Cut
- Oval
- Colour
- Purple
- Origin
- Pakistan
- Ships from
- Pakistan
- Treatment
- See listing
$77.50$28.18/ct
Gemmology
- Family
- Corundum
- Formula
- Al2O3
- Hardness
- 9
- Refractive index
- 1.762 - 1.770
- Specific gravity
- 4.00
- Crystal system
- Trigonal
Treatment & care
Commonly heat treated. Disclosure of diffusion treatment is essential.
Extremely durable at Mohs 9. Ultrasonic and steam safe.
Tradition
- Birthstone
- September
- Zodiac
- Virgo, Libra
- Anniversary
- 5th & 45th
- Chakra
- Third Eye & Crown
Purple corundum bridges the heart and higher mind, associated with insight and calm discernment.
Common questions
Is purple corundum the same as purple sapphire?
Chemically and gemmologically, yes, both are gem-quality aluminium oxide. Sellers sometimes prefer corundum when a stone has not been lab-certified, so the term often signals caution rather than a lesser stone.
Is purple corundum rare?
Fine purple corundum is scarcer than blue sapphire in comparable qualities, but it attracts far less demand, which keeps prices well below what its rarity would otherwise justify.
How durable is it?
Identical to ruby and sapphire, Mohs 9, no cleavage, excellent toughness. It is among the most wearable coloured stones available.