1.57 Ct. Blue Sapphire from Ceylon (Sri Lanka)

One beautiful transparent 1.57 carat cushion shape blue sapphire is presented by The Natural Sapphire Company, the stone measuring 7.42 x 6.24 x 3.91 mm, with a mixed brilliant cut and an excellent polish, a combination that immediately communicates both refined craftsmanship and gemological integrity. The first impression is of a vivid and intense blue tone that is both lively and deep, a color saturation that reads as intense on standard gemological scales, and which is exceptionally appealing for a sapphire of this size. The cushion outline gives the gem a classic silhouette while the mixed brilliant facet arrangement provides lively scintillation and a broad, faceted table to showcase the stone core. For an educated buyer seeking a gemstone that balances presence and wearable comfort, a 1.57 carat cushion sapphire with these proportions and an excellent polish occupies a desirable niche, because it carries enough weight to make a statement but remains suitable for elegant daily wear.

From a clarity and cutting perspective this sapphire is graded very slightly included evaluated at eye level, meaning that inclusions are minor and do not detract from the gem appearance when viewed without magnification, a level of clarity that enhances light return and color transparency. Typical inclusions in corundum are fine rutile needles or small crystals, and in this stone any internal features are minute enough to preserve visual purity and brightness, allowing the intense color to read cleanly across the face of the gem. The mixed brilliant cut has been used to maximize both brilliance and spread, and the proportions yield an effective depth close to 57 percent when comparing depth to average diameter, a practical balance that keeps the sapphire from appearing too deep or too shallow for its carat weight. The excellent polish ensures crisp facet junctions and smooth table surfaces, which in turn optimize sparkle and make the stone responsive to changing light conditions, an important trait for buyers who want a gem that performs on the hand and under varied lighting.

The origin of this sapphire is Ceylon Sri Lanka, a source long respected in the gem trade for producing sapphires with bright and lively blue characters, and provenance from this island adds contextual value for collectors and connoisseurs. Ceylon sapphires are often prized for their combination of clarity and vibrant color, and when paired with an intense saturation as in this piece, the result is a stone that is both regionally characteristic and comparatively rare. The enhancement listed for this sapphire is heat treated, a stable and widely accepted practice in the trade that improves color uniformity and can subtly reduce the visibility of minor inclusions, without altering the fundamental nature of the corundum. Full disclosure of heat treatment is standard best practice, and The Natural Sapphire Company affirms that the enhancement is limited to conventional heating with no evidence of surface diffusion or glass filling, treatments that would materially affect durability or value.

For the discerning buyer this cushion sapphire represents rarity in two complementary ways, size and color, a pairing that increases appeal in both personal and investment contexts. Intense blue sapphires above 1.5 carats from Ceylon that are eye clean and well cut are uncommon in the marketplace, because many stones at this weight display either lower saturation or more visible inclusions, and because prime material is frequently cut to maximize carat retention rather than optical performance. This example, with its balanced proportions, lively mixed brilliant facet pattern, and excellent polish, offers superior face up color and a sense of depth that makes the gem appear larger than its weight alone might suggest. For collectors the combination of origin, disclosed heat treatment, and an eye clean presentation enhances long term desirability, and for clients planning a bespoke commission the stone adapts well to a range of settings, including classic four prong mounts which allow maximum light interaction, and bezel options which provide additional protection for everyday wear. The Natural Sapphire Company stands behind the gemological description and offers further documentation on request, including professional imaging and independent lab reporting, to ensure that buyers have the technical information needed to make an informed acquisition.