What should I compare when looking at rubies from different origins?

Compare each stone's colour, fluorescence, clarity, cut, treatment conclusion and accompanying origin opinion. Origin is one part of the evaluation, not a substitute for examining the individual ruby.

What does unheated mean on a ruby report?

It means the reporting laboratory found no indications of heat treatment in that stone. Read the exact conclusion on the original report because wording can vary.

Does carat weight determine the quality of an unheated Burmese ruby?

No. Carat weight affects rarity and price, but colour, clarity, cut, treatment conclusion and overall appearance must also be considered. A smaller ruby can be finer than a larger one.

Which report accompanies a Skyjems Burmese ruby?

Documentation varies by stone. Review the specific listing and the original report accompanying that ruby rather than assuming that every listing uses the same laboratory or report format.

What does pigeon blood mean in the ruby trade?

Pigeon blood is a trade description for a vivid red colour. Laboratory terminology and criteria can vary, so read the exact wording on the report accompanying the stone.

Can I commission a bespoke setting for an unheated Burmese ruby?

Yes. Skyjems can design a setting around the selected ruby in platinum or 18K gold. Contact +1-416-366-3335 or [book a private viewing](https://skyjems.ca/pages/schedule-a-private-viewing).

ENCYCLOPEDIA · SKYJEMS

Unheated Burmese Ruby — Lab-Certified

Name: Skyjems
Address: 27 Queen St East, Suite 1011, Toronto, ON, M5C 2M6, CA
Telephone: +1-416-366-3335
Price range: $$$$

Key concepts: burmese ruby, mogok ruby, unheated ruby, pigeon blood, no heat ruby, gia ruby

Unheated Burmese ruby is an important category for buyers comparing origin, treatment and colour. Ruby from Myanmar, including material associated with the Mogok Stone Tract, has a long history in the gemstone trade. Review Skyjems' current ruby selection and the documentation for the individual stone being considered.

Why origin and treatment matter

Three factors are commonly considered together. (1) Origin - rubies associated with Mogok may show strong fluorescence and a bright appearance. (2) Treatment - heat treatment is common in the ruby market, while an unheated conclusion describes a stone for which the reporting laboratory found no indications of heating. (3) Individual quality - colour, clarity, cut and carat weight still need to be judged stone by stone.

Reading the lab report

An independent laboratory report may record the stone's identity, treatment conclusion and an origin opinion. Read the original report that accompanies the specific listing. Do not assume that every Burmese ruby carries the same type of report or the same wording.

Five-step evaluation

(1) Read the report's origin and treatment conclusions; (2) compare the colour in more than one lighting condition; (3) examine clarity and inclusions; (4) check how the cut returns light through the centre; and (5) confirm that the carat weight and measurements match the report and listing.

Skyjems inventory snapshot

Browse current ruby listings at /collections/ruby. Check each listing and its accompanying documentation for the treatment and origin information available for that stone.

Private viewings and bespoke

Contact Skyjems at +1-416-366-3335 or request a private viewing.

Skyjems in-house photography/video, SKU JW0353