15.33 Ct. Blue Sapphire Crystal from Ceylon (Sri Lanka)

This translucent various shape blue sapphire weighs 15.33 carat, with dimensions of 24.61 x 10.48 x 9.29 mm, presented in a rough crystal cut with an excellent polish. The combination of its considerable weight and its Ceylon origin makes this piece notable for collectors and connoisseurs alike, because sapphires above the 10 carat threshold are significantly rarer and command a premium per carat. The stone displays a light color intensity that lends it an airy blue presence, and it remains fully natural with no enhancement, a factor that further elevates its market and intrinsic value for buyers who prioritize untreated gems. Opal type, White Opal, is noted in our inventory as a complementary material for bespoke settings, offering a soft contrast to the blue sapphire when combined in custom jewellery designs.

From a grading perspective this sapphire is evaluated as slightly included at eye level, indicating that inclusions are present but do not dominate the gem visually when worn, and that the overall transparency and appeal are preserved. The rough crystal form lends an organic aesthetic, and the excellent polish enhances light return and surface appeal despite the stone not being fully faceted. The provenance of Ceylon Sri Lanka is important, because Sri Lankan sapphires are prized for their stable market reputation and well documented supply, supporting both collector confidence and long term value retention. At 15.33 carat the stone offers opportunities rarely found at this scale, whether the client prefers to retain the natural crystal silhouette for a sculptural statement piece, or elects to recut and facet the material to specific design goals. The absence of heat or other enhancement means the buyer acquires an honest, traceable natural sapphire, and The Natural Sapphire Company stands ready to provide further details including magnified imaging, specific inclusion notes, and tailored design advice. For an educated buyer seeking a substantial, untreated blue sapphire with clear provenance and exceptional size, this gem represents a distinctive investment in both aesthetic and geological rarity.