Highly figurative 38.01ct Koroit Boulder Opal!

Sourced from the opal fields of Queensland, Australia, this gorgeous piece is what is referred to as a nut opal due to its rich mahogany hues and wood grained patterns, but don't let that fool you, this chameleon's look is 100 percent matrix. It measures an incredible 33mm x 19.5mm x 7.9mm making it perfect for impressive jewelry setting, and is untreated!

Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.