Phosphophyllite (from Ancient Greek phyllon 'leaf', and phosphate ) is a rare mineral with the chemical formula Zn2Fe(PO4)2·4H2O, composed of hydrated zinc phosphate. It is highly prized by collectors for its rarity and for its delicate bluish green colour. Phosphophyllite is rarely cut because it is fragile and brittle, and large crystals are too valuable to be broken up. WebThis rare zinc phosphate mineral can show a lovely blue-green color. Prized specimens usually reside in mineral collections, and phosphophyllite's low hardness (3-3.5), brittle …
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WebPhosphosiderite is a vibrant purple orchid color and is a relative newcomer to the world of gemstones as it was only discovered in the late 19th century. Fine quality phosphosiderite … May 23, 2016 · chronicle holidays
Phosphosiderite Gem Guide and Properties Chart - Gemstones
WebJan 8, 2008 · Specific gravities are expressed in decimal numbers, for example, 4.00 for corundum, 3.52 for diamond , and 2.72 for quartz. Zircon, one of the densest of all gemstones, may have a specific gravity as high as 4.73! Specific gravity is an important tool in gemstone identification that is useful for the gem buyer as well as the gemologist. WebIn addition to being ancient, Turquoise is also a December birthstone. Its distinct robin’s egg blue color has drawn people to this gem for centuries, and it’s symbolic of healing, wealth, and luck. Turquoise is an opaque, blue-to-green mineral that is a hydrated phosphate of copper and aluminium, with the chemical formula CuAl6(PO4)4(OH)8 ... WebJan 4, 2024 · It is described in the statute as “a chalcedony pseudomorph after coral, appearing as limestone geodes lined with botryoidal agate or quartz crystals and drusy quartz fingers, indigenous to Florida.” See below to discover the rocks and minerals of Florida. To view information about Florida's geologic formations, visit Formations page. chronicle home group