19.52 Ct. Boulder Opal from Australia

I am pleased to introduce a standout Boulder Opal from The Natural Gemstone Company, a beautiful opaque multi color opal weighing 19.52 carats, cut into an elegant trillion shape with a tablet cut and presenting an intense color intensity and an excellent polish. This Australian opal measures 26.60 by 17.20 by 5.70 millimeters, and it has not undergone any enhancement, remaining completely natural and intact from the mine to your collection. As a salesperson and gemstone specialist I want to highlight that the combination of weight, unique trillion outline, and tablet cut make this piece exceptional for designers and collectors who seek a remarkable focal gem. The play of color is vivid and alive across the surface, and the boulder origin provides a lovely contrast of opal color against natural ironstone matrix, giving the stone depth and character that cannot be replicated in treated or synthetic material.

Visually this boulder opal displays a broad palette of shifting hues that catch light beautifully, including bright greens, electric blues, lavender purples, rosy pinks, and flashes of golden amber, all dancing across a background of warm ironstone that frames the colors. The tablet cut enhances surface area and color orientation, bringing the most intense flashes to the face up view, while the trillion silhouette gives a modern and elegant look for bespoke jewelry. The excellent polish creates a smooth, reflective surface that magnifies the internal color play, and the opaque nature of the piece emphasizes bold patches of fire rather than delicate translucency. In hand the gem is comfortably substantial, the 19.52 carat weight offers presence without overpowering a design, and the 5.70 millimeter thickness allows secure setting in bezel, half bezel, flush, or custom gallery mounts.

For practical considerations this Australian boulder opal is robust for its type, boulder opals typically retain portions of their ironstone host which contributes to structural stability, and this specimen benefits from a solid backing that supports the vibrant opal layers. Because there has been no enhancement, the gem requires the normal gentle care appropriate for opals, including avoiding harsh chemicals and extremes of heat or sudden temperature change, storing separately from harder gemstones to prevent abrasion, and professional inspection of any mounting to ensure longevity. When considering metals for setting, warm yellow gold highlights the golden and pink flashes beautifully, while white metals such as platinum or white gold provide a clean contrast that accentuates blues and greens, designers may also consider mixed metal treatments to bring out the multicolored nature of this stone.

At The Natural Gemstone Company we can assist with high resolution images, custom design suggestions, and secure shipping options for collectors and jewelers interested in this one of a kind boulder opal. This stone is ready to inspire a unique creation, whether you envision a dramatic solitaire pendant, an elegant statement ring, or a bespoke pair of matched pieces with complementary stones. If you would like a closer look we can provide additional viewing angles, advice on setting styles that will best showcase the tablet cut trillion form, and guidance on complementary accent stones and metal choices. Please contact The Natural Gemstone Company for availability and to discuss how this 19.52 carat Australian boulder opal can become the centerpiece of your next project.