0.53 Ct. Bi Color Sapphire from Thailand

At The Natural Sapphire Company we are pleased to present a rare 0.53 carat, oval shape, bi color sapphire, with precise dimensions of 5.07 x 4.06 x 2.97 mm, a mixed brilliant cut, and an excellent polish. This transparent sapphire displays a medium intense color intensity, with a natural two tone distribution that shifts between green and yellow depending on light direction, and no enhancement. The stone is untreated, originating from Thailand, which is known for producing sapphires with attractive color zoning and stable crystal structure. The clarity grade is slightly included, evaluated at eye level, which indicates the presence of small inclusions that do not materially detract from the gem when set, and which in many cases help confirm natural origin and authenticity to an educated buyer.

The mixed brilliant cut combines geometric faceting elements that are specifically proportioned to maximize light play, scintillation, and color dynamics. The design places a well proportioned table and precisely angled crown facets over a pavilion that uses brilliant style facets to return light with lively sparkle, while incorporating step like elements that preserve and reveal the bi color zoning. This faceting geometry creates intense internal reflections and controlled light leakage, allowing the sapphire to show varying saturation across the oval face as the stone is viewed or moved, and contributing to visual depth and lively flash. For a connoisseur, the combination of mixed brilliant faceting, excellent polish, and natural, untreated origin from Thailand represents a strong value proposition, because the cut enhances perceived size and color performance while the lack of enhancement preserves permanence and resale integrity. We recommend this gem for a bespoke ring or pendant where the oval outline and moderate depth will sit comfortably in a bezel or claw setting, and where the faceting will interact with ambient light to reveal the bi color character. At The Natural Sapphire Company we stand behind our grading and origin statements, and we are available to discuss certification options and setting recommendations to ensure this distinctive sapphire performs beautifully for years to come.