69 6 cm $1,500 Zoisite var. Tanzanite (Ca2Al3(SiO4)(Si2O7)O(OH)) Merelani Hills, Lelatema Mts, Simanjiro District, Manyara Region, Tanzania
69 6 cm $1,500 Carbon var. Graphite C Merelani Hills, Lelatema Mts, Simanjiro District, Manyara Region, Tanzania
69 6 cm $1,500 Calcite CaCO3 Merelani Hills, Lelatema Mts, Simanjiro District, Manyara Region, Tanzania
69 6 cm $1,500 Diopside CaMgSi2O6 Merelani Hills, Lelatema Mts, Simanjiro District, Manyara Region, Tanzania