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Koroit boulder opal is a highly sought-after, distinctive, and vibran opal type mined in the Koroit opal field in Southwest Queensland, Australia. Renowned for its deep brown ironstone matrix adorned with brilliant, swirling veins and lightning streaks of color that often featuring electric green, blue, purple, and orange. On top of that, it will often have colorful potch or precious opal in one-of-a-kind chaotic mosaic, webbed or stained glass patterns.
Type: Koroit Boulder Opal
Size: 12.8x8.5x5.9mm
Weight: 6.1ct (1.22g)
