BOULDER OPAL green and purple fire - Height: 6.5 cm - Width: 4.9 cm- 117 g - (1)

Boulder opal is a distinctive and highly prized type of opal that forms within ironstone boulders, primarily found in Queensland, Australia. Unlike typical opals that appear as solid masses, boulder opals feature vibrant veins or patches of opal embedded in their ironstone matrix, making each specimen truly unique. The colors described, including green and purple fire, refer to the opal's characteristic play-of-color—iridescent flashes that result from the diffraction of light on its microscopic silica spheres. This vivid and dynamic coloration, combined with the natural ironstone backing, gives the gemstone depth and a striking contrast. Boulder opals are favored by jewelry designers for their durability and the spectacular display of color they offer. The size indicated suggests a substantial, eye-catching specimen that can serve as a focal piece in jewelry or as a collector's gem, showcasing the extraordinary natural artistry embedded within these stones.