| 16aadw.r ((HEMATITE variety RAINBOW HEMATITE)), $10 MINIMUM BID, Andrade mine, Joćo Monlevade, Minas Gerais, Brazil, 4.5 x 1.3 x 1.3 cm, Miniature | |
 | Here is an interesting Hematite used in jewelry. Per a post on Mindat.org by John Sobolewski which says that the color is supposedly caused by a very thin layer of aluminum phosphate on mica-like thin flakes of Hematite |
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