15.55 Ct. Coral from Australia

This opaque orange coral is a compelling natural specimen, weighing 15.55 carats, with dimensions of 10.86 x 19.83 x 3.79 mm, presented in a freeform shape with no standard faceted cut, and an excellent polish that enhances its surface sheen. The color intensity is light, exhibiting a soft, warm orange tone that is uniform across the piece, and the stone is natural with no enhancement. As an organic gem composed primarily of calcium carbonate, coral is classified differently from mineral gemstones, and its opacity and surface characteristics are integral to its evaluation. In gemological terms, clarity for coral refers to surface integrity and consistency of color rather than internal inclusions, and this example shows a consistent, unfractured surface with fine polish work, making it especially suitable for visible mounted designs. Typical hardness for coral is in the range of three to four on the Mohs scale, so consideration of protective settings and gentle care is important to preserve its finish and shape.

For an educated buyer, this Australian origin coral carries several points of value. Australia is recognized as a source of quality coral, and provenance matters to collectors and designers who prioritize traceability and natural, untreated material. The lack of enhancement is a significant positive attribute, as untreated coral is rarer in the market and commands premium interest from collectors and connoisseurs who value natural color stability. The freeform shape and substantial 15.55 carat weight provide versatility for bespoke jewelry, such as a statement pendant, a custom ring with a protective bezel, or an inlay on a high end piece where the organic form and polished surface can be showcased. The excellent polish improves apparent luster and tactile appeal, while the light color intensity offers a timeless aesthetic that pairs well with both warm and neutral metal tones. The Natural Gemstone Company confidently presents this coral as a responsibly sourced, high quality option for collectors and designers seeking an untreated, attractively finished organic gemstone, and we recommend setting choices that protect the stone and routine care that avoids harsh chemicals and ultrasonic cleaning to maintain its beauty.