4.31 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This exquisite transparent 4.31 carat cushion shape blue sapphire measures 9.35 x 7.88 x 6.30 mm, and is fashioned with a mixed brilliant cut that balances life and depth, creating dynamic flashes and a velvety blue face up. Graded as eye clean at typical viewing distances, this sapphire offers clarity that allows light to travel through the stone with minimal obstruction, enhancing both brilliance and color saturation. The vivid color intensity speaks to a strong, well saturated blue that remains lively under a variety of lighting conditions, while the excellent polish gives crisp facet junctions and mirror like surfaces that maximize sparkle. Heat treated as is standard in the trade, the treatment is stable and accepted, and it serves to optimize the natural hue while preserving the inherent characteristics of the material. Origin Ceylon, Sri Lanka, is noted for producing sapphires with attractive medium to vivid blue tones, and this example displays the provenance qualities that educated buyers recognize and value.

Because of its proportion and finishing, the stone’s apparent flawlessness enhances its beauty from every angle, delivering a combination of scintillation, depth, and even color that is immediately evident when set or viewed loose. The cushion shape paired with a mixed brilliant cut yields broad flashes from the crown and a deep, lively pavilion that produces intense blue reflection and internal sparkle, while eye clean clarity permits unobstructed light return, so the gem reads as pure and lively rather than crowded by visible inclusions. For the discerning buyer, the mix of substantial carat weight, precise dimensions, vivid color, and meticulous polish elevates this sapphire to a category suitable for a prominent center stone, and makes it attractive for both bespoke jewelry and long term collection. At The Natural Sapphire Company we present this Ceylon sapphire with confidence, and we recommend settings that protect the pavilion while showcasing the crown, such as a three or four prong or a low bezel that preserves maximum light entry. Routine care with gentle cleaning and occasional professional inspection will maintain its beauty for a lifetime.