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Corundum  | | | | Reference: | [Rocks & Min.:60:55.] |
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Corundum var: Ruby  | | | | Reference: | [U.S Bureau of Mines,Spatial Data Extracted from the Minerals System/Mineral Industry Location System (MAS/MILS)CD-Rom,Sep,1995] |
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Corundum var: Sapphire  | | | | Reference: | [U.S Bureau of Mines,Spatial Data Extacted from the Minerals System/Mineral Industry Location System(MAS/MILS)CD-Rom,Sep,1995.] |
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Pyrope var: Rhodolite  | | | | Reference: | [U.S Bureau of Mines/Spatial Data fromthe Minerals System/Mineral Industry Location System(Mas/Mils)CD-Rom,Sep,1995] |
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