4.58 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent C.Dunaigre certified blue sapphire weighs 4.58 carats and has an elegant emerald cut with dimensions of 9.31 x 7.03 x 6.53 mm. Originating from Ceylon, Sri Lanka, this stone exhibits a vivid color intensity that is the hallmark of high quality Sri Lankan sapphires, a saturated blue that reads lively under a variety of light sources. The clarity is graded as very very slightly included evaluated at eye level, meaning inclusions are minimal and do not interfere with the gem's brilliance when viewed without magnification. The polish is excellent, resulting in crisp facet junctions and strong light return that complement the emerald cut's step facets. This sapphire has been heat treated, a widely accepted and permanent enhancement used to improve color and clarity. Full disclosure of treatment is provided, and the stone is accompanied by certification from C.Dunaigre, offering independent verification of weight, dimensions, origin, and the clarity assessment. For an educated buyer, the combination of vivid color, near eye clean clarity, a substantial 4.58 carat weight, and an emerald cut creates a rare and desirable profile, making it suitable for a refined center stone in a bespoke ring or a distinguished pendant. The Natural Sapphire Company stands behind the gem's documentation, provenance, and treatment disclosure, enhancing trust and marketability.

The journey of this sapphire from mine to market begins in the alluvial gravels of Ceylon, Sri Lanka, a source renowned for producing some of the world’s most sought after blue sapphires. After recovery by experienced local miners, the rough was carefully evaluated for color zoning, clarity, and crystallographic habit to determine the optimal cutting strategy. Choosing an emerald cut was intentional, a choice that preserves weight and emphasizes the stone’s internal color saturation while offering a refined, architectural appearance. The stone underwent a controlled heat treatment to even out color and reduce minor inclusions, a standard and stable process that enhances long term beauty. Following treatment, master cutters and polishers in Sri Lanka performed precision faceting to achieve the excellent polish and proportions, then the gem was submitted for independent grading and certification by C.Dunaigre. The Natural Sapphire Company handled final quality control, documentation, and ethical sourcing verification, preparing the gem for presentation to collectors and connoisseurs. For the discerning buyer, this sapphire represents verifiable origin, transparent treatment disclosure, expert cutting, and a balance of rarity and wearability, attributes that together justify its position as a valuable and enduring investment in fine colored gemstones.