Mexican Contraluz Opal Cut Polished Slice Queretaro Mexico 4cm 14. 7gr
Item History & Price
Reference Number: Avaluer:4264121 | Country/Region of Manufacture: Mexico |
****************************Cut and polished end piece of clear opal... with pale red hematite included quartz crystals and other unidentified inclusions. The inclusions found in opals from this locality reflect their volcanic provenance. Mexican opal often has inclusions of goethite-like needles, sometimes wrapped in limonite.Hematite crystals and botryoidal inclusions of white chalcedony. Various inclusions have been identified in Fire Opal - Goethite, Hematite, Fluorite, Hornblende, Rutile , Pyrite, Kaolinite , Cristobalite, Quartz, three-phase inclusion, two-phase inclusion, flow structures, and multiple cycles of growth have also been described.