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Hiddenite is a pale-to-emerald green variety of spodumene that is sometimes used as a gemstone. The first specimens of the hiddenite variety of spodumene were recovered circa 1879 near the settlement of White Plains, west of Stony Point, Alexander County, North Carolina. According to contemporary accounts, a man named Lackey brought them to the ...
Variscite is a secondary mineral formed by direct deposition from phosphate-bearing water which has reacted with aluminium-rich rocks in a near-surface environment. [6] It occurs as fine-grained masses in nodules, cavity fillings, and crusts. Variscite often contains white veins of the calcium aluminium phosphate mineral crandallite.
Gadolinite; Gahnite; Gahnospinel; Garnet group: Pyralspite. Almandine; Pyrope; Spessartine; Ugrandite. Andradite. Demantoid; Melanite; Topazolite; Grossular ...
The name is the word for shell bead in the Eastern Keresan language of the Santo Domingo Indians. [2] The oldest specimens of heishe date back to around 6000 BCE, although the same technique was used in northern Africa 30,000 years ago, using ostrich eggshell. [2]
In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...
The bead carvers, mainly in Turkey, were swift to understand that Bakelite was a material that could be well carved, had a great appearance, and could replace amber. Each master also had his secret "recipe", even heating in various liquids and oils, and making it undergo various physical or chemical processes to obtain the most beautiful product.
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