3.06 ct Oval Ruby, GRS, Siam Unheated

Name: 3.06 ct Oval Ruby, GRS, Siam Unheated video
Uploaded: 2026-11-12T00:56:46.675Z
Description: The term pigeon’s blood in its colour grade is the trade’s name for the finest saturated, slightly bluish red in ruby. It is documented by GRS (GemResearch Swisslab), a Swiss laboratory widely used for coloured stones. Its length-to-width ratio is 1.43. A centre stone of real presence for a ring or pendant.

3.06 ct Ruby, oval cut, from Siam. Unheated: the colour is as the stone formed, with no heat treatment. Thai (Siam) rubies are known for a deep red, a result of their higher iron content. GRS report GRS2025-040588. Measurements: 10.23 × 7.17 × 5.08 mm. Our grading: fine quality vivid (pigeon blood) red. Stock number CS-0394. The video on this page was filmed in our office, unedited and unfiltered. Approved trade buyers can sign in on this page for pricing, or WhatsApp or email us about this stone. Viewings by appointment in Toronto, Hong Kong, Bangkok and Dubai.

The term pigeon’s blood in its colour grade is the trade’s name for the finest saturated, slightly bluish red in ruby. It is documented by GRS (GemResearch Swisslab), a Swiss laboratory widely used for coloured stones. Its length-to-width ratio is 1.43. A centre stone of real presence for a ring or pendant.

More like this: Pigeon's Blood Rubies · Unheated Rubies · Rubies · Unheated Gemstones · Stone search

Similar stones: 3.00 ct Cushion Ruby, GRS, Burma Unheated · 3.01 ct Oval Ruby, GRS, Burma Unheated · 3.01 ct Cushion Ruby, GRS, Siam Heated · 3.03 ct Oval Ruby, GRS, Burma Unheated · 3.10 ct Oval Ruby, GRS, Burma Unheated · 3.12 ct Oval Ruby, GRS, Burma Unheated · 3.12 ct Oval Ruby Pair (1.60 + 1.52 ct), GRS, Burma Unheated · 3.22 ct Round Ruby Pair, Burma Heated

Further reading: Reading a GRS Report: Pigeon's Blood, Royal Blue, Vivid and the Comments Line · Rubies, Sapphires and Emeralds: Origin, Treatment and Value