3.77 Ct. Bluish Purple Sapphire from Ceylon (Sri Lanka)

This transparent 3.77 carat oval bluish purple sapphire measures 10.94 by 8.15 by 4.83 millimeters and is presented in a mixed brilliant cut with an excellent polish, attributes that collectively optimize face-up size and light return. The gem carries a clarity grade described as very very slightly included when viewed at eye level, meaning inclusions are minimal and do not materially interrupt transparency or brilliance, a significant advantage for buyers who prioritize clean appearance without sacrificing natural character. Color is medium intensity bluish purple, a tone that balances depth and brilliance and is particularly desirable for Ceylon sapphires, and the piece has been heat treated, a stable and industry-standard enhancement that intensifies desirable hue while preserving overall transparency and structural integrity. Origin is Ceylon, Sri Lanka, a provenance known for producing sapphires with lively, satiny tones and good dispersion, and at The Natural Sapphire Company we document origin and treatment to support informed purchasing decisions.

Optically this sapphire exhibits the vitreous luster and strong light return characteristic of corundum, combined with notable scintillation from the mixed brilliant facet arrangement, which delivers both broad flash and fine twinkle. Compared with other gemstones in its category, a Ceylon sapphire of medium intensity like this tends to appear lighter and more lively than most Burmese or Kashmir sapphires, which can be deeper in tone and more velvety in appearance. Against spinel, which has a slightly lower refractive index, this sapphire will show greater brilliance and fire, while tanzanite displays stronger pleochroism but a lower hardness and a different, more velvety luster. Compared with diamond, sapphire has lower dispersion and refractive index, so it will not exhibit the same level of white light fire, but the mixed brilliant cut maximizes corundum’s inherent strengths, producing excellent contrast and color play. For the educated buyer, this combination of weight, dimensions, eye-clean clarity, excellent polish, documented Ceylon origin, and customary heat treatment represents a balanced and transparent value proposition, and The Natural Sapphire Company can provide grading documentation and setting recommendations to showcase the gem’s reflective qualities to best effect.