0.72 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This 0.72 carat Ceylon blue sapphire from The Natural Sapphire Company presents a rare combination of precise proportions and vivid color concentration, configured in a classic emerald cut. The stone measures 6.51 x 4.59 x 2.43 mm, yielding an ideal depth percent of approximately 43.8 percent when calculated against the length and width average, a proportion that preserves saturation while allowing controlled light return. The cutting style is faceted, executed as a step cut with an elongated rectangular table and truncated corners, producing broad parallel facets on the crown and pavilion that emphasize colour plane uniformity and clarity. The overall faceting scheme has been calibrated to avoid excessive windowing, so the gem maintains an intense blue presence even under variable lighting, and the excellent polish and accurate facet junctions enhance both the surface lustre and internal flash.

From a gemological perspective the sapphire demonstrates classic corundum optical properties, with strong refractive contrast and subtle birefringence that contribute to lively internal movement without disruptive scintillation. The emerald cut used here favors large step facets rather than a multitude of small brilliance facets, so the visual effect is a sequence of broad flashes and deep color fields, rather than a scatter of pinpoint sparkle. That controlled brilliance is an asset for collectors and connoisseurs who value colour intensity and clarity, because the step pattern creates a hall of mirrors effect that amplifies the saturation and yields clean, architectural light behaviour. The facet symmetry and table to depth relationship have been cut with precision to present an even face up tone, minimizing pleochroic shifts between different orientations, which is particularly desirable in a Ceylon origin sapphire.

Clarity has been graded as eye clean at eye level, which means that under normal viewing conditions no inclusions detract from the stone s visual integrity. The clean field allows the intense blue to read without interruption across the table and along the step facets, and the excellent polish ensures crisp facet edges and mirror like facet planes. This sapphire has been heat treated, a stable and industry standard enhancement that improves colour saturation and reduces undesirable inclusions without compromising stability or durability when set and worn. Origin is Ceylon Sri Lanka, noted for producing sapphires with a lively, saturated blue that often balances cornflower brightness with deeper tones. The specific gravity and refractive indices typical of corundum support the observed weight and dimensions, and the result is a compact, highly saturated gem that retains strong presence on the finger despite a modest carat weight.

For use as a centerpiece the emerald cut format lends itself to elegant solitaire and three stone settings, providing a refined geometric focal point that pairs well with tapered baguette or channel set accents, or with a minimal bezel that showcases the clean lines. The stone s proportions and eye clean clarity make it suitable for upscale fine jewellery applications where the emphasis is on colour purity and cut economy, and the excellent polish will present continuous, well defined flashes from movement. At The Natural Sapphire Company we recommend mounting the gem with a secure low to medium profile setting to preserve pavilion light return while protecting the corners. Care is straightforward, using warm soapy water and a soft brush, avoiding ultrasonic cleaning if the mounting or setting includes treatments that could be stressed. This 0.72 carat Ceylon emerald cut blue sapphire offers technical refinement and striking visual impact, making it an exceptional choice for collectors and designers seeking a brilliantly cut, colour focused stone to serve as the centerpiece in a bespoke creation.