18.04 Ct. Cabochon Boulder Opal from Australia

One beautiful translucent 18.04 carat oval shape multi color opal, dimensions 24.58 x 11.18 x 10.40 mm, cabochon cut, clarity grade very slightly included, evaluated at eye level, medium intense color intensity, excellent polish, enhancement no enhancement, origin Australia, opal type Boulder Opal. This specimen shows a warm orange to amber body color with lively flashes of green and subtle red play of color that move as the light shifts, the polished dome enhances the internal fire while the natural ironstone backing typical of boulder opal provides a rich, earthy contrast and durable base. The cutting preserves the stone weight and presence, making the gem ideal for a bold solitaire ring, a striking pendant, or a custom statement piece where the potato shaped cabochon can be set in a protective bezel to showcase the color play and protect the edges. At 18.04 carats and with strong polish, this opal has excellent presence on the hand or at the throat, and the translucent nature allows depth and internal reflections that catch the eye.

As representatives of The Natural Gemstone Company, we stand behind the natural origin and unenhanced condition of this Boulder Opal, and we provide expert grading based on visual assessment at eye level. For care, avoid harsh chemicals, prolonged exposure to extreme heat, and ultrasonic cleaners, clean gently with a soft cloth and warm soapy water, and store separately from harder gemstones to prevent abrasion. The combination of Australian origin, medium intense play of color, very slightly included clarity, and superb polish makes this piece desirable for collectors and designers alike, offering a balance of natural character and wearable durability. If you would like additional images, custom mounting suggestions, or assistance with setting dimensions, our team at The Natural Gemstone Company is happy to help you select the perfect design to highlight this rare and beautiful Boulder Opal.