Pyrope mainly distributed in the ultrabasic rock and its residual slope wash placer, large gem grade pyrope is rare. The former Soviet union, Norway, Czech and China jiangsu have output. Magnesium iron garnet is mainly produced in the United States and Tanzania. Rhodolite comes from the Angle of mica schist and gneiss and other metamorphic rocks and sands, origin countries such as Sri Lanka, Brazil, Madagascar, India and so on. Grossular is the product of skarn, but also found in serpentinite and gabbro alteration, for instance, green grossular was found in Kenya, Pakistan, the former Soviet Union and China. Hessonite produced in Sri Lanka, spessartine produced in pegmatite but also found in some metamorphic rocks, high Gem grade spessartine comes from Burma, Sri Lanka, Brazil and other countries. Andradite is the product of schist and metamorphosed limestone, brown and green; green garnet and topazolite is produced in the serpentine. Dark garnet is produced in the alkaline igneous rock, there are output in former Soviet Union and Congo. Uvarovite were found in the former Soviet union and the United States.
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