7.75 Ct. Boulder Opal from Australia

One beautiful opaque 7.75 carat fancy shape multi color Boulder Opal is presented with dimensions of 37.70 x 8.60 x 3.90 mm, executed in a tablet cut that emphasizes a broad, continuous play of color across its surface. The piece displays intense color intensity and an excellent polish, characteristics that materially affect visual impact and market assessment. The 7.75 carat weight is notable for a tablet cut opal of this profile, because greater carat weight in slab and tablet cuts increases surface area and presence, making the color play more easily appreciated without magnification. In opals, value is driven primarily by the quality and distribution of play of color, but weight contributes to rarity and versatility, particularly when a larger, well finished parcel exhibits consistent, intense color and a clean, polished face.

This specimen is an Australian Boulder Opal, prepared as a doublet enhancement, a construction that consists of a thin natural opal layer adhered to a darker backing to increase visual contrast and durability. As a disclosed doublet, the 7.75 carat measurement encompasses the complete assembled piece, which is an important consideration when comparing values to solid opal material, because backing material contributes to the overall carat weight. The doublet format, however, allows preservation of thin opal material that would otherwise be too fragile for wear, while maintaining a strong presentation of multicolored fire. The tablet cut and 3.90 mm thickness make this opal suitable for low profile settings and inlay work where a combination of length and color continuity is desired. For collectors and designers assessing provenance and valuation, the Australian origin, pronounced color intensity, and tidy dimensions provide a clear basis for appraisal, and The Natural Gemstone Company provides full disclosure of enhancement and measurements to support informed acquisition decisions.