5.397 Ct Siamese Ruby Pear-Shaped Modified Brilliant Natural Ruby

This exceptional 5.397-carat natural ruby showcases the coveted “red of medium strong saturation” color from Siam (Thailand), certified by SSEF. Cut in a pear-shaped modified brilliant measuring 13.28 x 10.11 x 4.51 mm, this ruby exhibits impressive size and classic proportions.

The SSEF gemstone report (146507) confirms the ruby’s authenticity as “variety of natural corundum” from Siamese origin, highly prized for producing rubies with excellent transparency and rich color. The certificate notes indications of heating with minor residue in healed fissures—standard enhancement practices in the ruby market. The substantial carat weight exceeding 5 carats makes this an exceptionally impressive stone.

This Siamese ruby represents a significant opportunity for creating an extraordinary piece of jewelry or as a standalone gemstone acquisition with remarkable size and color saturation.