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these are just a few of the unique gemstones produced in the united states. gemstones produced in the u.s. the united states geological survey reports that notable quantities of gem-quality agate , beryl , coral, diamond , garnet , feldspar , jade , jasper, opal , quartz , ruby, sapphire, shell, pearls
small mines, recreational miners although the united states produces a diversity of gemstone varieties, the quantity produced is very small. in calendar year the total gemstone production of the united states was only $ million. that amount is very very small compared to the $ billion in gemstones that...
https://geology.com/gemstones/states/