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t-shirts beryllium t-shirts cut t-shirts faceted t-shirts facets t-shirts gem t-shirts gems t-shirts gemstones t-shirts geology t-shirts jewel t-shirts mineralogy t-shirts pegmatite t-shirts phosphate t-shirts polished t-shirts rare gem t-shirts

photographs beryllium photos cut photos faceted photos facets photos gem photos gems photos gemstones photos geology photos jewel photos mineralogy photos pegmatite photos phosphate photos polished photos rare gem photos

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Herderite is a phosphate of beryllium and calcium that occurs typically in very coarse grained rocks called granite pegmatites. Crystals can be large, especially the ones from Brazil, the source of most of the faceted herderites that have been produced. These stones range from about 3 to 9 carats.