9.52 Ct. Black Opal from Australia

This Black Opal from Australia weighs 9.52 carats and presents a freeform outline with dimensions 22.40 by 17.80 by 2.99 mm, an opaque body and an intense multi color play that is evenly distributed across the surface. The cut is listed as n a, reflecting its freeform, non faceted profile and its cabochon like dome that emphasizes internal color rather than faceting geometry. Clarity is graded slightly included at eye level, a designation that indicates visible internal features without significant loss of color or transparency. The polish is excellent, executed to a mirror finish that maximizes light return and sharpness of color contrast. There is no enhancement, the color and surface condition are natural, and the weight to dimension ratio yields a substantial face up presence for its carat size. As a Black Opal the dark body tone provides high contrast, allowing red and blue spectral patches to resolve with saturated intensity, and the thin 2.99 mm thickness calls for careful consideration in setting to protect the stone while preserving its optical response.

Inclusions in this specimen act as unique identifiers and contribute to the gemology story of the piece, rather than detracting from it. The observed internal characteristics include fine silica layering and isolated potch intergrowths that create subtle zones of opacity, occasional microfracture lines that have been well stabilized during cutting, and trace remnants of host matrix in the girdle area that confirm its Australian provenance. These features are consistent with natural formation processes and serve as diagnostic markers when assessing origin, treatment history, and authenticity. From a craftsmanship standpoint the cutter retained natural contours and balanced the color patches across the surface, deliberately preserving characteristic inclusions to maintain provenance and to enhance collector value. For setting recommendations a bezel or protective surround is preferred to accommodate the 2.99 mm profile and to shield the edges, while an open back setting can be used selectively to intensify the play of color. The Natural Gemstone Company supplies this Black Opal with full disclosure of its characteristics, and this piece will appeal to connoisseurs who value natural, untreated material with identifiable internal structure and exceptional optical performance.