Mexican Cantera Opal Cabochon - Jalisco, Mexico Tsumeb Black Hematite)

Black Hematite)

Rosasite is a secondary mineral that is commonly found in the oxidized areas of copper-zinc ore deposits

visually appealing collectible

price adjusted accordingly

these unique fluorites transform under ultraviolet light

Mexican Cantera Opal Cabochon - Jalisco, Mexico Tsumeb Black Hematite)Ive 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