9.52 Ct. Black Opal from Australia

This Black Opal from Australia presented by The Natural Gemstone Company is a translucent, multi color specimen weighing 9.52 carats, with precise dimensions of 22.40 x 17.80 x 2.99 millimeters. The gem is fashioned in a freeform shape with no standardized faceting, the lapidary treatment favoring a subtle cabochon profile to preserve the natural play of color. Clarity is graded slightly included when evaluated at eye level, with small internal matrix features that are typical for Australian opal material, and these inclusions do not interrupt the overall optical performance. Color intensity is classified as intense, exhibiting saturated flashes across the green, blue, and red portions of the spectrum, and the surface finish is an excellent polish that maximizes light entry and return. There has been no enhancement applied to this stone, the material is natural and untreated, and the thin profile at 2.99 millimeters has been retained to showcase broad color patches while maintaining the integrity of the opal body.

From a technical perspective the gem demonstrates strong play of color caused by ordered silica sphere diffraction, with multi color patches appearing to shift with angle and lighting. The freeform outline was chosen to follow the best color seams in the rough, minimizing material removal and orienting the color plane parallel to the table to enhance color saturation and pattern continuity. The excellent polish indicates meticulous lapidary technique, including progressive sanding through fine abrasives and final polishing with cerium oxide or equivalent to achieve low surface roughness and high gloss. For setting considerations the shallow thickness suggests a bezel or flush mount to provide edge protection and secure the stone without stressing the thinner girdle, and a setting that allows light to enter from the top and sides will best preserve the intense color display. This Black Opal, supplied by The Natural Gemstone Company, is ideal for collectors and designers who value natural, untreated Australian opal with pronounced optical character, and our team can advise on mounting strategies and custom settings to optimize durability and visual performance.