This spectacular boulder opal from Queensland displays an explosion of golden orange, yellow, green, and blue fire that covers the entire surface in a dazzling multicolor display. The warm golden and orange tones mix with bright greens and electric blues, creating a painterly effect that looks like fireworks frozen in stone. The dark body tone makes all these colors really pop and glow with incredible intensity.

At 21 x 12.1 x 4.7 mm and weighing 10.17 carats, this boulder opal has substantial size and presence perfect for statement jewelry. The freeform teardrop shape follows the natural contours of how the opal formed, giving it organic character while still being refined enough for high end settings. With this much vivid multicolor fire and impressive size, this stone would make an incredible centerpiece for a pendant or bold ring. The combination of warm and cool tones means it would pair beautifully with gold, platinum, or even mixed metals.

This is completely natural solid boulder opal with no treatment, straight from the Queensland opal fields. Not a doublet or triplet, just authentic Australian boulder opal exactly as it formed. The full spectrum of fire colors from warm golds and oranges through to cool greens and blues makes this stone particularly special and versatile. Boulder opals with this much color coverage and intensity are becoming increasingly rare as the best deposits are mined out.

As the official opal October birthstone, this stone represents hope and creativity. The spectacular multicolor fire and substantial 10 carat size make it perfect for serious collectors or as an investment piece in fine jewelry. This boulder opal offers museum quality color and size at competitive pricing.

This boulder opal will arrive securely packaged in an Opal Galaxy luxury gift box, ready for professional jewelry setting or safe storage.