Mexican Cantera Opal Cabochon - Jalisco, Mexico set which can sometimes display a

which can sometimes display a delicate fluorescence under UV light

or using as colorful accents on a desktop

Most people see a dark tourmaline and immediately assume it is Schorl

3in / 21cm

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Mexican Cantera Opal Cabochon - Jalisco, Mexico set which can sometimes display aIve always been fascinated by how certain minerals look when they are left partially embedded in their host rock, and this Mexican Cantera Opal Cabochon is a perfect example of that natural contrast. In Spanish, "Cantera" translates to quarry or stone, which refers to the pinkish tan rhyolite matrix that surrounds the precious opal. Instead of being cut out as a traditional gemstone, these specimens are shaped and polished so that the opal sits like a