Purple Corundum 3.35ct Cushion Cut, natural purple corundum from Pakistan, 3.35 ct

Photographed under daylight-balanced light without retouching. Colour may shift slightly under warm indoor lighting.

Loose Faceted Gemstone

Purple Corundum 3.35ct Cushion Cut

$129.50$38.66/ct

PurpleCushion3.35 ctOne of a kind

Our guarantee: 30-day returns, full refund, insured and tracked from our workshop to your door. Payment is covered by PayPal Buyer Protection.

A natural purple corundum weighing 3.35 carats cut as a cushion, from Pakistan. Hand-selected for colour and life rather than paper grades. 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. Care. Extremely durable at Mohs 9.

Ultrasonic and steam safe. Treatment. Commonly heat treated.

Disclosure of diffusion treatment is essential.

Specification

Species: Corundum
Variety: Purple Corundum
Weight: 3.35 ct
Cut: Cushion
Colour: Purple
Origin: Pakistan
Treatment: Commonly heat treated. Disclosure of diffusion treatment is essential.
Mohs hardness: 9
Refractive index: 1.762 - 1.770
Specific gravity: 4.00
Crystal system: Trigonal
Chemical formula: Al2O3

Ships from Peshawar, Pakistan. Dispatched within 1–3 working days, tracked and insured. Free worldwide over $500.

Returns. 30 days, unworn and in original packaging. Custom-set jewellery is excluded.

What to look for in 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.

Value is driven by: Colour saturation, treatment status, size.

Living with this stone

Extremely durable at Mohs 9. Ultrasonic and steam safe.

Birthstone: September
Anniversary: 5th & 45th
Chakra: Third Eye & Crown
Zodiac: Virgo, Libra

Corundum questions, answered

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.

Read the full corundum guide →