13.75 Ct. Yellowish Brown Cabochon Sapphire from Ceylon (Sri Lanka)

One, striking 13.75 carat oval sapphire, translucent and warm in tone, is presented by The Natural Sapphire Company, a gem that combines impressive size with natural, untreated beauty. The gem measures 14.26 x 10.75 x 8.75 mm, and it is fashioned into a classic cabochon that gently domes above a smooth base, enhancing the stone interior and creating a soft, luminous surface. The overall color reads as yellowish brown, with medium intense saturation that gives the piece a rich but restrained character, a color that makes it versatile for many jewelry designs. Clarity has been evaluated at eye level as slightly included, which means that the stone has natural features visible to careful observers, and these inclusions contribute to the gem story rather than detract from its appeal. The polish is excellent, yielding a high sheen across the cabochon face that plays up the gentle color shifts and internal reflections. Importantly, this sapphire has no enhancement, and its origin is Ceylon, Sri Lanka, a source long celebrated for producing sapphires with fine color and natural charm.

Delving into the gemological details, the cabochon cut is especially effective for this particular sapphire because it emphasizes translucency and color interplay rather than faceted brilliance. The smooth dome diffuses light within the stone, creating a soft glow that ranges from honeyed yellow to warm amber brown depending on viewing angle and lighting. The medium intense color strength ensures that the gem reads as a substantial color presence in jewelry, without overpowering other design elements. The slightly included clarity grade is consistent with natural sapphires from Ceylon and indicates internal crystal growth patterns and mineral inclusions that add character and proof of origin. The excellent polish enhances wearability, making the surface comfortable against the skin and resilient to everyday light wear when set properly. Because there has been no heat or other enhancement, the gem retains its natural formation characteristics and market appeal to collectors who seek untreated material. These combined qualities make the piece both wearable and collectible, a natural conversation starter that highlights provenance and authenticity.

For design and styling, the oval cabochon shape and generous 14.26 x 10.75 x 8.75 mm dimensions open many creative possibilities. A bezel setting in warm yellow gold will harmonize with the yellowish brown tones, creating a vintage inspired look that emphasizes the gem warmth. Alternatively, an open prong design in rose gold can provide a lighter, contemporary silhouette while allowing more light to contact the stone edge, which can slightly alter the perceived intensity and reveal more internal texture. As a center for a statement ring, the 13.75 carat weight will offer substantial presence on the hand, ideal for cocktail or signet inspired pieces. For a pendant, the cabochon profile sits comfortably against the chest, offering an intimate shine and a tactile quality that is especially appealing for daily wear. The stone can also be combined with small accent stones such as diamonds in a halo to add contrast and elevation, or paired with complementary sapphires in mellow tones for a cohesive palette. At The Natural Sapphire Company we can help design settings that respect the untreated nature of the gem, choosing metals and mounting techniques that protect the cabochon base while showcasing its surface glow.

Caring for an untreated cabochon sapphire of this size and character is straightforward, and good care will maintain its polish and luster for many years. Clean the gem with warm water and a mild soap solution, using a soft brush to dislodge any dust that may collect around the girdle or underside where settings meet the stone. Avoid ultrasonic cleaners and harsh chemicals that could stress inclusions, and remove the piece for heavy manual tasks or situations where it could be struck. When not in use, store the sapphire separately from other jewelry to prevent surface abrasion. If you would like a formal appraisal, additional images, or a short video to inspect the gem in varying lighting, The Natural Sapphire Company is pleased to provide further documentation and high resolution media on request. We stand behind clear disclosure and can discuss setting options, custom design timelines, and the provenance of this Ceylon sapphire, assisting collectors and clients seeking a distinctive, untreated stone that balances natural character with wearable elegance. If you would like to view the sapphire in person, schedule a consultation, or explore matching pieces, we are ready to help you make an informed and confident choice.