0.54 Ct. Bluish Green Sapphire from Madagascar

This transparent bluish green sapphire is a precisely formed 0.54 carat round gemstone, with dimensions of 4.56 by 4.62 by 3.20 millimeters, and a mixed brilliant cut that balances table brilliance with pavilion depth. The gem displays an intense color intensity, a clarity grade of slightly included when evaluated at eye level, and an excellent polish that enhances surface luster and facet definition. The stone has been heat treated as a stable enhancement to refine its hue and clarity, and its recorded origin is Madagascar. The Natural Sapphire Company documents and certifies this sapphire, ensuring the described measurements, cut and treatments are consistent with our quality standards, and the gem is presented in a well proportioned round shape suitable for a wide range of settings.

The narrative of this sapphire begins deep in Madagascar’s ancient crust, where millions of years of tectonic activity and metamorphism created the conditions necessary for corundum to crystallize. Under elevated temperatures and pressures, aluminum rich rocks reacted with oxygen, allowing corundum crystals to nucleate and grow slowly over geological time. Trace amounts of iron and titanium, incorporated into the crystal lattice during growth, produced the bluish green coloration that defines this stone, while localized variations in chemistry and fluid presence led to the small, naturally occurring inclusions observed at eye level. Subsequent geological movements exposed these pockets of gem bearing rock, and careful mining recovered crystals that were later heat treated to stabilize and optimize color. Precision cutting by experienced lapidaries transformed a rough crystal into this mixed brilliant round, the facets arranged to maximize light return and to display the stone’s intense color uniformly across the table. The Natural Sapphire Company records this provenance and treatment history as part of our commitment to transparency and gemological accuracy, and we advise standard care for heat treated corundum, including routine cleaning with warm soapy water and protection from hard knocks, to preserve the stone’s polish and optical character for generations.