Lot 1121W
Superb Gem Amethyst Cave with Calcite Crystal
4 December 2018, 10:00 PST
Los AngelesSold for US$35,000 inc. premium
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Superb Gem Amethyst Cave with Calcite Crystal
Uruguay
Countless gem-quality amethyst crystals - and a well-formed calcite crystal – are displayed in this geode, which is distinguished by a cave-like opening for viewing. Polished edges reveal beautiful fine bands of agate. Geodes are formed within volcanic vugs - voids in volcanic rock formed by gas bubbles - into which mineral-laden water gradually seeps over eons, forming crystals under immense heat and geologic pressure. Uruguayan amethyst is among the finest and most desired amethyst in the world. Besides the deep gem quality color of the amethyst crystals, the geode exhibits a secondary crystal growth of a large, exquisite calcite crystal measuring 5 x 5 ½ x 10 inches. Measuring 37 x 42 x 34in; Weighing 877 kilograms
Countless gem-quality amethyst crystals - and a well-formed calcite crystal – are displayed in this geode, which is distinguished by a cave-like opening for viewing. Polished edges reveal beautiful fine bands of agate. Geodes are formed within volcanic vugs - voids in volcanic rock formed by gas bubbles - into which mineral-laden water gradually seeps over eons, forming crystals under immense heat and geologic pressure. Uruguayan amethyst is among the finest and most desired amethyst in the world. Besides the deep gem quality color of the amethyst crystals, the geode exhibits a secondary crystal growth of a large, exquisite calcite crystal measuring 5 x 5 ½ x 10 inches. Measuring 37 x 42 x 34in; Weighing 877 kilograms