66.00 cts Rough Tumbled Boulder Opal Gemstone Matrix Rough. Beautiful Rare Colorful Stone. Showing incredible deep metallic blue hues with green flashed and multi play of colour. Dimensions (mm) 33 x 20 x 17mm Weight (cts) 66 Type Rough This is a natural piece of boulder matrix. The opal is embedded in the ironstone and it takes a good polish. Some times this material has very fine fractures in it which you only find when you go to rub it down. For this reason we tumble the material to make it solid. We have taken the photo with the stone wet. # Quilpie Boulder Opal Matrix Gemstone – Australian Natural Beauty Discover the unique beauty of **Quilpie Boulder Opal Matrix**, a fascinating Australian gemstone prized for its natural patterns, earthy character and flashes of vibrant colour. Found around Quilpie in Queensland, Australia, this distinctive opal showcases a beautiful combination of ironstone host rock and precious opal, creating an individual gemstone with its own natural character. ### Formation & Origin Quilpie Boulder Opal formed millions of years ago as silica-rich solutions gradually filled tiny cracks, cavities and spaces within ironstone and surrounding rock. Over time, these deposits developed into precious opal, producing striking colour flashes against the natural matrix. Each piece is unique, with its own patterns, textures and play of colour. ### Rarity & Collectability Australian boulder opal is highly sought after by gemstone collectors for its natural beauty and distinctive geological character. Matrix material is particularly appealing for its intricate combination of host rock and opal, with each specimen offering a one-of-a-kind appearance. Colour intensity, pattern, quality and the amount of precious opal all influence its desirability. ### Metaphysical Properties In crystal traditions, opal is associated with creativity, inspiration, emotional balance and self-expression. Boulder opal is also believed by some to encourage grounding, stability and a connection with nature. These are traditional spiritual beliefs rather than scientifically proven health benefits. **A genuine piece of Australian gemstone character**, Quilpie Boulder Opal Matrix is an excellent addition to any opal collection, gemstone display or jewellery-making project. Every stone tells its own story, formed over millions of years beneath the Australian outback.