Huge! 17mm UNTREATED 4.95ct Mexican Fire Opal!

Check out this gemstone! You have gorgeous orange opal crystal showing full translucency with a section of frosted crystal. And it's all natural! Opals are made of silica sphere formations as apposed to the crystalline formations of other gemstones. This silica structure is the reason why opals have less density than other gems giving them a fantastic size to weight ratio. This means the 4.95 carat weight of this gem translates to an impressive 17mm x 10.9mm x 5.5mm! And it's 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.