35.93 Ct. Coral from Australia

One beautiful opaque 35.93 carat oval orange coral, dimensions 24.52 x 17.31 x 8.11 mm, carving cut, intense color intensity, excellent polish, no enhancement, origin Australia, offered by The Natural Gemstone Company. The weight of 35.93 carat corresponds to approximately 7.186 grams, a substantial mass for a single carved coral element that preserves both surface detail and three dimensional relief. The oval outline measures 24.52 mm along the long axis and 17.31 mm along the short axis, providing a classic cameo proportion that balances profile expression with structural thickness. The stone reads as opaque under transmitted light, with color described technically as orange with high saturation and even hue distribution across the plane. Color intensity is consistent from the surface through the shallow relief, indicating homogeneity of the biogenic material and an absence of fillers or dye penetration, which supports the declared no enhancement status.

The carving cut is executed in low to medium bas relief with an articulated portrait motif, showing controlled removal of substrate to create separate planes for hair, facial profile, and bust. The cutter has maintained sharp delineation between primary and secondary planes, with strong undercutting beneath the hairline to create shadow and depth when viewed at typical pendant angles. Tool marks are minimal on macro inspection, indicating a combination of fine rotary abrasives and hand finishing, rather than coarse machine routing. The excellent polish is a mirror like finish on convex surfaces, achieved by progressively finer abrasives and a final buffing stage that closed micro abrasions without obscuring fine incised lines. Edge symmetry around the oval perimeter is uniform, with the girdle region blended to the cabochon reverse to allow for secure setting. The 8.11 mm thickness gives sufficient relief depth for cameo effect without compromising the integrity of the fragile organic structure.

Material properties are relevant to both lapidary considerations and wearability. Coral is a biogenic calcium carbonate with a typical Mohs hardness in the 3 to 4 range, which makes it soft relative to silicate gemstones and susceptible to abrasion and chemical attack. The surface mineralogy of this Australian specimen is compact and dense for coral, which contributes to the ability to take a high polish and to support detailed carving without flaking. Porosity is low on the presented specimen, contributing to the intense saturated orange tone and the lack of surface pitting. Because the piece is untreated, there is no evidence of dye, resin filling, or thermal modification, which affirms a natural color and a stable internal structure, within the limitations of organic material. Care recommendations for this coral include avoiding exposure to acids and household chemicals, avoiding steam and ultrasonic cleaning, storing separately from abrasive gems, and cleaning with a soft cloth and warm water with mild soap when necessary. Long term exposure to strong sunlight can alter some organic shades, so rotation of use and protective settings will extend original color and polish.

Design and setting guidance is informed by the combination of size, relief depth, and material characteristics. The oval proportion and significant relief make this coral ideal for use as a central pendant or brooch, where the work can be seen en face and protected by a bezel or gallery setting that shields the sides. For finger rings, a protective bezel with a raised lip is recommended to prevent lateral impact on the high relief hair and profile. Mounting in gold or silver with a graduated gallery will allow light to play across the polished convex surfaces without exposing the piece to unprotected contact. From a valuation and collection perspective, a single, intact carved coral of 35.93 carat, with intense natural color and no enhancement, sourced from Australia, represents a desirable specimen for both connoisseurs of organic gems and designers seeking a statement element. The Natural Gemstone Company can supply provenance documentation and high resolution imaging for CAD based setting design, and our lapidary consultants are available to discuss mounting options, conservation measures, and certification details.