Dioptase Cyclosilicates CuSiO2(OH)2 Altyn Tube, Kazakhstan & Africa Size: 10cm Chrysocolla Phyllosilicates (Cu,Al)2H2Si2O5(OH)4．nH2O Guangdong, China Size: 10x9 cm Malachite Carbonates Cu2CO3(OH)2 China Size: 9x6 cm Malachite Carbonates Cu2CO3(OH)2 Congo, Africa Size: 7cm Smithsonite Carbonates ZnCO3 New Mexico, USA Size: (Right) 6x6 cm / (Left) 10 cm Rosasite Carbonates (Cu,Zn)2CO3(OH)2 Durango, Mexico Size: 10 cm Green Mica: Fuchsite Phyllosilicates K(Al,Cr)3Si3O10(OH)2 Brazil Size: 11cm Pink Mica: Alurgite Phyllosilicates K2(Mg,Al)4-5(Al,Si)8O20(OH)4 Minas Gerais, Brazil Size: 10x8 cm Purple Mica: Lepidolite Phyllosilicates K(Li,Al)2(Si,Al)4O10(F,OH)2 South Dakota, USA Size: 10cm Diopside (var. Violane) Inosilicates CaMg[Si2O6] Val d' Aosta, Italy Size: 9x3 cm Azurite Carbonates Cu3(CO3)2(OH)2 Guangdong, China Size: (Left) 8x7 cm / (Right) 7x6 cm Azurite Carbonates Cu3(CO3)2(OH)2 Arizona, USA Size: (Right) 7cm Azurite Carbonates Cu3(CO3)2(OH)2 Size: 7cm Malachite & Azurite Carbonates Cu2CO3(OH)2 & Cu3(CO3)2(OH)2 Nimo Copper Mine, Tibet Size: 11 & 13 cm Linarite Sulphates PbCu(SO4)(OH)2 New Mexico, USA Size: 10cm Sulphur Native elements S Louisiana, USA Size: 12x9 cm Manganocalcite Carbonates (Ca,Mn)CO3 New South Wales, Austrialia Size: 10cm Rhodonite Inosilicates MnSiO3 Montana, USA Size: 10 cm Rhodochrosite Carbonates MnCO3 Catamarca, Argentina Size: 13x7.5 cm Rhodochrosite Carbonates MnCO3 Chalkidikki, Greece Size: 10 cm