4.10 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This sapphire began its life in the high grade alluvial gravels of Ceylon, Sri Lanka, where generations of local miners have worked with intimate knowledge of the terrain and seasonal flows. Located in a region known for producing some of the world s most desirable blues, the rough material was recovered through careful screening and hand sorting, a process that privileges the preservation of crystal integrity. From the moment the stone emerged from the gravel, its potential for a rare, saturated blue was evident, and that potential guided every subsequent decision. Initial assessment in the field noted a dense, vivid body color and excellent clarity relative to comparable rough, prompting trusted partners to set the piece aside for further evaluation. The rough was transported under secure and documented custody to our cutting partners, where traceability records maintained a continuous provenance chain. At each stage the emphasis was on conservation of weight while unlocking optimal optical performance, a balance that reflects both the material s innate qualities and the measured judgment of experienced lapidaries.

The decision to fashion the gem into a cushion shape with a mixed brilliant cut responded to the rough s proportions and the ambition to maximize both face up size and light return. The finished result is a transparent, GIA certified Royal Blue sapphire weighing 4.10 carat, with finished dimensions of 9.57 by 7.30 by 5.84 mm. Precision cutting achieved a faceting scheme that enhances scintillation while preserving a deep, even color, and the stone was evaluated as eye clean at normal viewing distance, a clarity assessment that confirms the absence of visually significant inclusions at eye level. The gem underwent standard heat treatment, a widely accepted practice in the trade that stabilizes and intensifies color without compromising durability, and that treatment was clearly documented in the accompanying laboratory report. Polishing was carried out to an excellent standard, resulting in sharp facet junctions and a smooth, reflective surface that contributes to the stone s overall visual appeal. The GIA certificate provides an independent verification of weight, shape, cut style, origin as Ceylon, and the presence of heat enhancement, and it anchors the gem s technical profile with authoritative laboratory data.

From final grading, the stone entered The Natural Sapphire Company s inventory following a formal quality control inspection and the preparation of full provenance documentation. Photographic records, the GIA report, and the chain of custody documentation travel with the gem to assure collectors and designers of its origin and treatment history. For jewelry applications, this sapphire s cushion outline and strong royal blue saturation make it well suited to both classic and contemporary settings, and the dimensions 9.57 by 7.30 by 5.84 mm offer a generous face up presence for a 4.10 carat stone. Recommended mounting considerations include protective bezel or four prong settings that allow light to enter the pavilion and showcase the mixed brilliant faceting, while still ensuring daily wearability. Care guidance is straightforward, heat treated sapphires remain stable with routine wear, and periodic cleaning with warm water, mild detergent, and soft brush will maintain brilliance. The Natural Sapphire Company stands behind the gem s documented origin and treatment, and we provide full certification and advisory support to assist in design, insurance, and long term care decisions. This sapphire represents a measured combination of natural provenance, expert cutting, and professional certification, delivered with clear documentation and a commitment to ethical sourcing.