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

Mineral Specimen

Ruby 32.8g Mineral Specimen

$535.00

Red32.8 gOne 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 ruby weighing 32.8 grams mined in Pakistan. Presented as found, on its natural matrix. Specimens are valued for crystal form and undamaged terminations rather than facetable clarity.

Care. Extremely durable. Safe for ultrasonic cleaning unless the stone is glass-filled or heavily fractured, glass-filled rubies must only be cleaned with soap and water.

Treatment. Heat treatment is near-universal and stable. Lead-glass filling is a separate, lower-value treatment that must always be disclosed.

Specification

Species: Ruby
Weight: 32.8 g
Colour: Red
Origin: Pakistan
Treatment: Heat treatment is near-universal and stable. Lead-glass filling is a separate, lower-value treatment that must always be disclosed.
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 ruby

Pigeon blood, a vivid pure red with a faint blue undertone and strong fluorescence, is the benchmark grade. Certification from GUILD, GRS or SSEF matters most above 1 carat, where price per carat rises steeply.

Value is driven by: Colour (pigeon blood premium), treatment status, clarity, size.

Living with this stone

Extremely durable. Safe for ultrasonic cleaning unless the stone is glass-filled or heavily fractured, glass-filled rubies must only be cleaned with soap and water.

Birthstone: July
Anniversary: 15th & 40th
Chakra: Root
Zodiac: Cancer, Leo

Ruby questions, answered

What does pigeon blood ruby mean?

It describes the top colour grade: a vivid, saturated pure red with a slight blue secondary hue and strong red fluorescence under daylight. The term is applied by laboratories such as GUILD and GRS and carries a substantial price premium.

Is a heated ruby still natural?

Yes. Heat treatment mimics geological conditions, is permanent and stable, and applies to the large majority of rubies on the market. Unheated stones of good colour command a significant premium.

What is a glass-filled ruby?

Low-grade corundum whose fractures have been filled with lead glass to improve apparent clarity. It is a legitimate product when disclosed, but it is far less valuable and less durable than heated ruby, and it cannot be cleaned ultrasonically or resized with heat.

Read the full ruby guide →