16.59 Ct. Multi Color Boulder Opal (Ironstone Opal) from Australia

If you are searching for a single, confident statement piece that ends your quest for the perfect gemstone, this opaque 16.59 carat fancy shape multi color opal will answer that need. This Boulder Opal measures 40.70 x 9.80 x 4.40 mm, and its tablet cut is optimized to present a broad, dramatic color surface. The intense color intensity and excellent polish reveal a living spectrum across the stone, while the lack of enhancement guarantees you an authentic Australian gem. At The Natural Gemstone Company we understand that whether you want a rare collector item or a one of a kind engagement focal stone, you need a gem that combines size, color, and natural character, and this tablet cut opal delivers on every count.

Under bright sunlight the tablet cut catches the full spectrum, triggering vibrant flashes of electric blues, greens, and flashes of warm reds that leap from the ironstone backed face, giving that classic boulder depth. In soft daylight the colors become painterly, layered ribbons of hue that move as the stone turns, ideal for a pendant that reads differently with each angle. Under warm incandescent or candlelight the opal shifts, emphasizing fiery reds and oranges, creating an intimate glow that flatters skin tones and jewelry metals. Under cool LED or fluorescent light the play of color becomes sharp and jewel like, with greens and blues popping against the dark matrix, perfect for display under gallery lighting or for evening events. In low light the tablet cut still offers discreet flashes, making the gem a private spectacle when held close, while its excellent polish ensures slick, reflective surfaces that enhance every shimmer.

This opal is perfect for you if you want rarity, stability, and visual drama all in one stone, it wears well in bespoke settings that protect the tablet face while showcasing its color bar, and its generous 16.59 carat weight makes it an immediate focal point in any design. From collectors seeking an unenhanced Australian specimen to couples desiring an unconventional engagement gem, this Boulder Opal is a consummate solution. Trust The Natural Gemstone Company to provide provenance, expert handling, and the confidence that your search ends here.