1.63 Ct. Semi-Black Opal from Australia

As a gemstone specialist with The Natural Gemstone Company, I am pleased to present this exquisite translucent 1.63 carat oval shape multi color opal, a true delight for collectors and designers alike. This stone measures 9.69 x 7.69 x 3.53 mm and has been fashioned into a tablet cut that showcases the stone surface with a low profile and broad play of color. Graded as a Semi Black Opal, it carries a clarity evaluation of very slightly included when viewed at eye level, a testament to its natural character that does not detract from its beauty. The color intensity is rated as intense, and the polish has been finished to an excellent standard, allowing the vibrant internal fire to emerge crisply across the face of the gem. There has been no enhancement, and the stone is of Australian origin, which is renowned for producing opals with some of the most striking and stable color play in the world, making this piece a genuine natural treasure.

Visually this opal is captivating, with a multi color display that shifts from greens to blues to warm orange and flashes of red depending on the angle of view and the light source. The translucent body allows light to penetrate and interact with the internal silica structure, creating a lively mosaic of color that seems to move within the gem as you tilt it. The Semi Black classification gives the opal a subtle darkening of the background that enhances the contrast of the colors, so the greens and blues appear fresher and the warmer tones take on a richer hue. The tablet cut provides a broad surface to appreciate the patterning and makes the stone particularly well suited to designs where a flat, dramatic color face is desired. Because the stone is only very slightly included at eye level, the play of color takes center stage, while the exceptional polish gives a smooth, reflective finish that complements both modern and classic jewelry settings.

For designers and buyers thinking about how to showcase this opal, there are several attractive options. Set in a bezel or low profile halo, the tablet cut and oval shape will read beautifully as a center gem in a ring, pendant, or statement stud, with the Semi Black background intensifying the play of color for maximum visual impact. In rings, a low bezel with a protective edge will help shield the stone while preserving its flat, luminous surface, and pairing the opal with warm metals such as yellow gold will enhance the orange and red flashes, while white gold or platinum will emphasize the greens and blues for a cooler palette. The stone also lends itself to bespoke settings where the designer plays with negative space and light to allow the opal to breathe and show its full spectrum. For someone who prefers understated elegance, a simple solitaire mount will let the opal take center stage, while more elaborate designs can incorporate accent stones that echo particular color flashes within the opal, creating a cohesive and artistic composition.

Caring for this Semi Black Opal will ensure its beauty endures for generations, and I am happy to offer guidance as you consider this purchase. Opal is a hydrated silica, so it benefits from gentle handling, avoidance of sudden temperature changes, and protection from harsh chemicals and ultrasonic cleaners. Clean using a soft cloth and mild soap with warm water, rinse gently, and dry thoroughly. Store the opal separately from harder gems to prevent scratches, and consider a soft pouch or a two compartment jewelry box for long term storage. Because this opal is natural, untreated, and sourced from Australia, you are acquiring a gem with authentic provenance and character, backed by our expertise at The Natural Gemstone Company. We provide detailed information about each stone, and I am available to answer questions about certification, custom mounting options, and shipping. If you seek a distinctive center stone that balances intense color play with practical wearability, this 1.63 carat Semi Black Opal represents a rare opportunity to own a piece of natural artistry that will bring joy and admiration every time it catches the light.