4.32 Ct. Cabochon Semi-Black Opal from Australia

This Semi Black Opal from Australia is presented as a single, fully natural specimen weighing 4.32 carats, shaped into a classic oval, with dimensions of 13.31 x 11.65 x 5.13 mm. The gem is opaque with an intense, multi color play that is visible across its surface, and it has been fashioned as a cabochon to best display its internal fire. The polish is excellent, and there has been no enhancement applied to alter its appearance or stability. At The Natural Gemstone Company we describe this gem in precise, verifiable terms to allow a knowledgeable buyer to assess its quality at a glance. The cabochon cut is the traditional and most suitable style for opal, allowing the viewer to see shifting flashes of green, blue and violet as the angle of light changes, and the oval outline provides versatile options for bezel or prong settings while preserving the integrity of the stone.

From a gemological perspective this stone exhibits attributes that matter to an educated buyer, beginning with its body tone and color intensity. As a Semi Black Opal the body color is darker than light opal varieties, providing contrast that enhances the brightness and saturation of the play of color. The intense color intensity reported here indicates well saturated flashes, rather than faint or washed out tones, which directly influences market value. Clarity for opal is judged differently than for transparent gemstones, and this specimen is described as opaque with an even, attractive pattern rather than isolated clouding or disruptive potch. The cut and proportions are balanced, with a height of 5.13 mm sufficient to produce depth of play without excess bulk that can create light leakage. The lack of enhancement is notable, because treatments such as dyeing or resin stabilization can alter long term appearance and buyer confidence. Australian origin further supports its desirability, given that Australian opal deposits are among the most stable and sought after sources, and provenance information is a key factor for collectors and investors alike.

The enduring appeal of this Semi Black Opal lies in its natural optical phenomena and its untreated state, qualities that will continue to captivate over the years with proper care. As a hydrated form of silica the opal is softer than many gemstones, and it benefits from being set in protective designs, avoiding exposure to harsh chemicals, and being stored away from extreme heat and sudden temperature changes. When mounted in a secure bezel or a well designed protective prong setting, the cabochon will maintain its polish and color play for generations. The combination of a substantial 4.32 carat weight, intense multi color play, excellent polish, and Australian origin make this gem attractive to connoisseurs who seek both aesthetic pleasure and sound gemological attributes. At The Natural Gemstone Company we stand behind our descriptions and encourage buyers to request photographic documentation and independent certification if desired, because transparency of origin, treatment status, and measurable proportions are central to long term satisfaction with any investment in fine, natural gemstones.