7.73 Ct. Boulder Opal from Australia

Presenting a remarkable Boulder Opal from The Natural Gemstone Company, one beautiful opaque 7.73 carat freeform shape multi color opal, dimensions 14.00 x 14.20 x 4.40 mm, cut n a, intense color intensity, excellent polish, enhancement no enhancement, origin Australia. This gem is a genuine Australian boulder opal, showing the natural ironstone matrix along its base that is characteristic of this treasured opal type. The freeform shape has been retained to preserve the most striking color play and natural character of the piece, rather than forcing it into a standard geometric outline. As a salesperson with deep experience in gemstones, I want to emphasize that this stone is completely natural, untreated, and ready to become the focal point of a custom design, from an artisan pendant to a one of a kind statement ring.

Visually this Boulder Opal offers a powerful and lively palette, dominated by vivid blue and green flashes, with subtle shifts to teal and hints of violet as the light moves, set against the warm brown ironstone that adds texture and depth. The intense color intensity means the play of color reads strongly even in subdued lighting, and the excellent polish enhances that effect by providing a smooth, reflective surface that brings out every nuance. The stone is opaque as expected for many boulder opals, and the visible matrix not only creates a dramatic contrast but also gives structural stability, making this opal more robust for daily wear when properly set. The shallow thickness of 4.40 mm and the freeform outline invite bespoke settings that cradle and protect the stone, such as low bezel mounts or custom channel settings that celebrate the stone chapel style without exposing its edges to undue stress.

For design and care, consider a setting that uses the ironstone base as a design element, allowing a portion of the natural matrix to remain visible to highlight the opal s origin and character. A low profile bezel in 14 karat or 18 karat gold will accentuate the warm tones of the matrix and will also provide protection, while a custom silver or platinum flush setting can create striking contemporary contrast. Because this opal has no heat or resin treatments, it should be cared for gently, avoiding prolonged exposure to high heat and harsh chemicals, and cleaned with a soft cloth or mild soapy water. At The Natural Gemstone Company we can assist with recommendations for mounting and will gladly coordinate custom work if you prefer a finished jewelry piece, we also provide detailed provenance information, and our team can supply photography and lighting advice to show the stone at its best. This Boulder Opal is a rare opportunity to own a natural, intense, and well finished piece from Australia that will serve as a memorable centerpiece for a lifetime of enjoyment.