11.58 Ct. Boulder Opal from Australia

Introducing a remarkable natural gemstone from The Natural Gemstone Company, a one of a kind opaque Boulder Opal weighing 11.58 carat, presented in an elegant oval shape and expertly fashioned with a tablet cut. This opal measures 19.98 by 14.63 by 4.44 mm, and it has been finished to an excellent polish that allows its intense color intensity to sing under light. Sourced from Australia, this stone exhibits no enhancement, preserving its natural integrity and making it an honest choice for collectors and connoisseurs who value untreated beauty. The tablet cut keeps the surface broad and flat, enhancing the play of color and giving the stone a versatile profile that sits comfortably in a variety of mounting styles, especially bezel and flush settings that protect the thinner edges while showcasing the vibrant surface.

Visually this Boulder Opal is captivating, with a multi color palette that shifts as you move it, offering striking flashes of electric green and deep ocean blue, intermingled with vivid purple and delicate pink tones that appear like watercolor veins across a dark, earthy ironstone matrix. Because it is a Boulder Opal, you can see the natural host rock gently framing the color patches, creating a compelling contrast that emphasizes the gem s depth and origin. The dense, opaque body tone amplifies the gem s play of color, producing a more dramatic experience under diffuse light and direct illumination alike. The tablet cut and excellent polish accentuate the surface luster and ensure the color patches remain the primary visual narrative, while the stone s thickness of 4.44 mm gives enough substance for secure settings without being bulky. For someone seeking an opal with character and presence, this piece is a superb example of Australian Boulder Opal craftsmanship, a stone that tells a story of its landscape and geological birthplace every time it catches the light.

From a design and care perspective this Boulder Opal offers exceptional flexibility and longevity when set and maintained properly. Its oval tablet profile makes it ideal for a statement ring, a sophisticated pendant, or an artisan brooch where the ironstone backdrop can be incorporated into the design for added rustic elegance. For rings we recommend a secure bezel setting that follows the stone s oval contour, providing protection for the edges while letting the tablet face display the full spectrum of color. For a pendant, a low profile setting will let the stone sit close to the chest and reveal its shifting colors with movement. Because the gem has no enhancement, care is straightforward, with gentle cleaning using a soft cloth and mild soapy water, avoiding harsh chemicals and extreme temperature changes. As specialists in natural gemstones, The Natural Gemstone Company stands behind this opal s authenticity and quality, and we are happy to assist with custom mounting suggestions, professional setting services, and recommendations for insurance and appraisal. This 11.58 carat Australian Boulder Opal is a rare and evocative treasure, perfect for someone seeking a natural, untreated gem with strong visual impact and enduring character.