28.59 Ct. Blue Cabochon Sapphire from Ceylon (Sri Lanka)

This specimen is a semi-translucent 28.59 carat Ceylon blue sapphire, oval in outline with exact dimensions of 16.95 by 13.04 by 12.23 millimeters, presented in a traditional cabochon cut. The cabochon execution emphasizes a high, well-centered dome and smooth, continuous curvature that preserves weight and maximizes the stone’s internal color diffusion, rather than relying on faceting for brilliance. Polishing is graded excellent, producing a high luster across the dome with minimal surface abrasion or polish haze. Clarity is reported as very slightly included when evaluated at eye level, and this sapphire displays subtle internal features that create a soft, velvety optical texture without significant windowing or large crystals that would interrupt the visual plane. Color is assessed as medium intense blue, with even distribution across the table and sides, and the semi-translucent nature provides a gentle internal glow rather than full transparency, making this cabochon particularly suitable for settings that benefit from color depth rather than facet play.

This sapphire has been heat treated, a commonly accepted enhancement that stabilizes and intensifies blue saturation, and the origin is Ceylon, Sri Lanka, a source noted for producing sapphires with a characteristic silky or velvety appearance. Cabochon cutting and the degree of translucency here are consistent with traditional Ceylon lapidary practice that aims to balance weight retention with an appealing, diffuse color presentation. For mounting considerations, the stone’s substantial depth of 12.23 millimeters and even dome profile support bezel and high-crown settings, and the very slightly included clarity grade suggests secure placement without heavy protective shrouding. Care recommendations include avoiding rapid thermal shocks and common household chemicals, and routine gentle cleaning with warm water, mild detergent, and a soft brush to maintain the excellent polish. The Natural Sapphire Company presents this sapphire for collectors and connoisseurs who prioritize natural material character, traditional cabochon craftsmanship, and the specific aesthetic of a medium intense Ceylon blue.