Sourced from the legendary deposits of Burma (Myanmar), this 3.75-carat Natural Unheated Blue Sapphire Cabochon exhibits an intensely saturated, velvety royal blue body color. Shaped into a well-proportioned rectangular cushion cabochon with an exceptional mirror polish, this gem displays the deep optical purity, smooth luster, and luminous internal glow characteristic of premier unheated Burmese corundum.
Completely untreated and free from any thermal enhancement, this investment-grade sapphire is accompanied by a full identification report from the Gemological Institute of America (GIA) confirming its natural origin and unheated status. Featuring slight VVS clarity with delicate natural internal silk, its rich color density and elegant dome make it an extraordinary candidate for a bespoke luxury signet ring, pendant, or collector's vault.
Gemstone Specifications
| Species | Natural Corundum |
| Variety | Natural Blue Sapphire |
| Carat Weight | 3.75 ct |
| Color | Intense Royal Blue |
| Clarity | Slight VVS (High transparency with ultra-fine rutile silk under magnification) |
| Cutting Style | Cushion / Rectangular Cabochon (Excellent Polish) |
| Enhancement / Treatment | No Indications of Heating (100% Unheated / Untreated) |
| Geographic Origin | Burma (Myanmar) |
| Laboratory Report | GIA (Gemological Institute of America) |
The Enduring Appeal of Unheated Burmese Sapphires
Burmese sapphires that remain unheated while retaining deep, uniform color saturation are among the rarest gems on earth. Because thermal treatment is routinely used across the industry to alter color and dissolve silk, completely untreated gems certified by the GIA command premium valuation and strong collector demand across international markets.
Custom Fine Jewelry Commission
This loose sapphire is ready for private acquisition or can be mounted into a custom fine jewelry commission. Consult with our master jeweler to craft a bespoke 18K yellow gold, rose gold, or platinum setting engineered to complement the gem's silhouette and rich blue saturation.
