6.65 Ct. Boulder Opal from Australia

This is a striking translucent Boulder Opal from Australia, presented by The Natural Gemstone Company, weighing 6.65 carat, and cut into a freeform shape that measures 24.54 x 7.92 x 3.36 mm. The stone displays intense color intensity and an excellent polish, with a clarity grade of very slightly included when evaluated at eye level. There is no enhancement, so what you see is the stone in its natural state, complete with the ironstone matrix that gives Boulder Opal its unmistakable character. The play of color is vivid and lively, with flashes of green, blue, red, and orange that shift as the stone moves, and the thin elongated profile creates beautiful linear color bands that read well across a range of settings. The surface is highly reflective, and the excellent polish allows light to penetrate the translucent layers, showcasing the internal color patches and the organic contrast with the host rock.

Visually this piece is a collector ready specimen and also a ready source material for bespoke jewelry design. The freeform shape invites creative settings, and the stone will sit particularly well in a low bezel for rings, a curved bar style pendant for necklaces, or a bespoke cuff in either silver or warm yellow gold to emphasize the multicolored fire. Because it is a Boulder Opal, the ironstone backing provides additional strength compared to thinner opal types, making it more durable for daily wear, while the translucent body and intense play of color maintain a showstopping appearance. For designers and lapidaries, the 24.54 x 7.92 x 3.36 mm dimensions and the 6.65 carat weight make this a versatile component for creating focal pieces that balance presence with elegance. The natural matrix lines and scattered inclusions are part of the stone story, adding depth and individuality that cannot be replicated in treated or synthetic materials.

At The Natural Gemstone Company we pride ourselves on offering responsibly sourced natural gems, and this Australian Boulder Opal exemplifies natural beauty and character. If you are considering this opal for a project, we can advise on mounting styles that protect the stone while highlighting its color, we can provide additional detailed images or video to help evaluate color play under different lighting, and we can discuss custom settings or matching stones if you are building a set. Care recommendations are simple, avoid harsh chemicals and extreme temperature changes, clean with a soft cloth and warm soapy water, do not use ultrasonic or steam cleaning, and store separately to prevent abrasion. This piece is ideal for the collector who appreciates natural, untreated gemstones, and for the client who wants a one of a kind centerpiece for a handmade jewelry commission. If you would like further information, pricing, shipping options, or assistance choosing a metal and setting that will best complement the intense colors and natural matrix of this Boulder Opal, please contact The Natural Gemstone Company for personalized service and expert guidance.