7.66 Ct. Semi-Black Opal from Australia

I am pleased to present a striking semi black opal from The Natural Gemstone Company, a beautifully structured multi color opal weighing 7.66 carats, presented in an elegant oval shape with dimensions of 18.07 by 13.15 by 4.47 millimeters. This piece features a tablet cut, with a low dome profile that showcases the color play across a broad surface, and it is finished with an excellent polish that maximizes light response and surface smoothness. The clarity is graded very slightly included when evaluated at eye level, which means the stone presents with clean appearance to the naked eye while retaining natural inclusions that confirm authenticity and character. Color intensity is medium intense, offering lively flashes without overpowering brightness, and the enhancement is noted as triplets, a common and respected treatment that protects the opal with a clear cap and increases contrast by using a dark backing. Origin is Australia, a source renowned for producing opals with exceptional play of color, and the classification of this specimen as a semi black opal signals that it has a darker body tone than a white opal, allowing the vibrant spectrum to show up with striking depth and contrast.

Visually the opal offers a captivating mix of greens and blues that shimmer with hints of violet and occasional flashes of warm orange and red, creating a shifting mosaic of color as the stone moves under light. The multi color distribution is spread across the tablet surface in a way that reads beautifully from many viewing angles, making it an ideal focal stone for artisan settings where movement and light interaction are critical. The triplet construction provides a durable clear cap over the opal layer which helps protect the delicate surface and enhances the perceptible color by magnifying the fire against the darker backing. For wearability I recommend settings that offer edge protection such as a bezel or a secure halo, especially for rings, while pendants and earrings are excellent choices for everyday display because the triplet cap adds resilience to handling. Keep in mind that despite the protective cap, opals remain sensitive to sudden temperature changes and harsh chemicals, so cleaning with warm water, a mild soap and a soft cloth is best, avoid steam, ultrasonic cleaners and exposure to household cleaners and prolonged direct sunlight.

As a representative of The Natural Gemstone Company I stand behind the provenance and description of this semi black opal, and I am happy to provide additional images or to send the stone for independent certification upon request. This opal is an exceptional choice for a custom statement piece, offering a rare combination of size, color play and secure triplet construction that makes it both eye catching and practical for jewelry use. If you are considering a commission, I can advise on metal choices to best complement the color palette, with warm yellow gold bringing out the orange flashes and cool white metals enhancing the greens and blues, and I can also recommend complementary accent stones for a balanced design. We offer insured shipping and careful packaging to protect the triplet cap in transit, and our team is available to discuss mounting options, matching pairs or bespoke design work to ensure the stone is showcased to its fullest potential. Please contact me at The Natural Gemstone Company for pricing, custom mounting ideas or further technical details, I am here to help you make this unique Australian semi black opal the centerpiece of a piece you will enjoy wearing and admiring for years to come.