1.18 Ct. Cabochon White Opal from Australia

This specimen is a translucent White Opal weighing 1.18 carats, fashioned in an oval outline with dimensions of 8.13 x 6.07 x 4.42 mm, the cabochon cut selected to maximize the stone internal luster and play of color, the dome height calibrated to preserve the stability of the hydrated silica structure while offering a pronounced optical window, the gem exhibits medium intense color intensity with multi color flashes visible across the surface, clarity is graded eye clean at standard loupe free visual inspection, polish is excellent, and the piece is untreated, originating from Australia according to our sourcing records.

From a material science perspective this opal displays characteristics typical of high quality Australian White Opal, the body is translucent to semi translucent allowing diffused light penetration which enhances internal diffraction effects, the play of color observed in this cabochon arises from the ordered silica sphere arrangement producing spectrally separated flashes, the multi color sequence within the piece is dominated by cool blues and occasional warm yellow to green accents which appear as discrete patches and subtle broad flashes rather than tight pinfire patterns, the cabochon faceting style here is a full dome with smooth curvature to minimize light leakage and to allow viewing from multiple angles, the excellent polish reduces surface scattering and maximizes perceived depth and luster.

In practical gemological terms the gem is ideally suited for secure bezel or rubover settings where the dome profile can be showcased while protecting the girdle, the dimensions 8.13 by 6.07 by 4.42 mm place the piece in a versatile size class for rings, pendants, and artisan brooch work, care should be taken during metalwork to avoid prolonged exposure to high heat and sharp blows because opal is a hydrated amorphous form of silica with a specific gravity near 2.15 and refractive index approximately 1.37 to 1.52, the eye clean grade indicates absence of macroscopic fractures and common inclusions at normal viewing distances which supports confident use in close contact wear, mounting orientation should align the plane of the cabochon for optimal play of color when viewed at typical visual engagement angles.

The Natural Gemstone Company guarantees that this White Opal is natural and untreated, provenance tracing indicates Australian field origin and no laboratory enhancements or stabilizing treatments were applied, for curators and designers who value precise material data we can provide supplemental documentation covering measured weight, caliper dimensions, clarity assessment notes, color intensity classification, and photographic records under standard lighting, routine maintenance is simple and conservative, clean with warm water and mild detergent using soft cloths, avoid chemical exposure and sudden temperature change, this opal is a technically attractive specimen for both collectors and makers who seek a stable, translucent white opal with pleasing multi color expression and high quality cutting and polish.