4.03ct GIA certificate Natural burma sapphire unheated cabochon gemstone WBGEM SA42

Sourced from the historic mines of Burma (Myanmar), this 4.03-carat Natural Unheated Blue Sapphire Cabochon showcases the deep, velvety saturation and luminous luster that have made Burmese corundum world-renowned. Shaped into a smooth, high-domed cabochon, this gem radiates a rich, natural blue body color with exceptional internal depth. Completely free of thermal enhancement or artificial treatments, this investment-grade sapphire is accompanied by a prestigious report from the Gemological Institute of America (GIA) confirming its natural origin and unheated status. Its balanced proportions and intense color density make it an ideal centerpiece for a custom luxury signet ring, pendant, or an elite gemstone investment portfolio. Gemstone Specifications Species Natural Corundum Variety Natural Blue Sapphire Carat Weight 4.03 ct Color Vibrant Deep Blue Clarity Slight VVS (Fine natural rutile silk characteristic of unheated provenance) Cutting Style Smooth Cabochon Enhancement / Treatment No Indications of Heating (Unheated / Untreated) Geographic Origin Burma (Myanmar) Laboratory Report GIA (Gemological Institute of America) The Rarity of Burmese Unheated Sapphires Natural, unheated sapphires from Burma crossing the critical 4-carat mark represent a tiny fraction of global gemstone discoveries. Valued by auction houses and fine jewelers for their organic beauty and scarcity, untreated stones with certified provenance hold lasting aesthetic and intrinsic value. Custom Design & Mounting Options This exceptional sapphire is offered as a loose collector specimen or can be set into a bespoke fine jewelry commission. Contact our team to design a custom 18K yellow gold, rose gold, or platinum mounting tailored to your specifications.