2.28 Ct. Cabochon Semi-Black Opal from Australia

This listing describes one translucent, multi color Semi-Black Opal, weighing 2.28 carats, presented in an oval shape. Exact dimensions are 12.94 x 6.19 x 4.39 mm, and the piece has been fashioned as a cabochon cut to optimize its play of color. Clarity is graded as eye clean when evaluated at eye level, and the color intensity is described as intense, providing vivid and readily observable color flashes. The polish is excellent, with smooth surfaces and well defined doming, and there has been no enhancement applied to this opal. The documented origin of this material is Australia, which is consistent with the characteristic body tone and color behavior found in Semi-Black Opal material from known Australian sources.

Optically the stone displays a strong, multi color play with predominant green and blue flashes, and secondary tones that contribute to a lively and varied appearance as the viewing angle changes. The translucent body combined with a subdued darkening typical of Semi-Black Opal enhances contrast and depth of color, while the cabochon profile supports a broad, even presentation of pattern across the oval surface. At the stated dimensions and weight, this opal is appropriate for a range of jewelry applications, including bezel set pendants and low profile ring settings where protection of the cabochon surface is desirable. The combination of eye clean clarity, intense color intensity, and excellent polish makes it a technically sound choice for fine jewelry fabrication or for collectors seeking an unenhanced Australian Semi-Black Opal. This description and the accompanying images are provided by The Natural Gemstone Company, and reflect our assessment based on standard gemological observation practices at eye level.