Verdelite - Green variation of Tourmaline (Cr-traces)
Cyclosilicates
Na(Li,Al,Mg,Mn,Fe)3Al6(BO3)3[Si6O18](OH)4
Minas Gerais, Brazil
Size: 8 cm
Schorl - Black variation of Tourmaline (Fe-traces)
Cyclosilicates
Na(Li,Al,Mg,Mn,Fe)3Al6(BO3)3[Si6O18](OH)4
Minas Gerais, Brazil & United Kingdom
Size: (Left) 4cm / (Middle) 9 cm / (Right) 3 cm
Rubellite - Pink variation of Tourmaline (Mn-traces)
Cyclosilicates
Na(Li,Al,Mg,Mn,Fe)3Al6(BO3)3[Si6O18](OH)4
Minas Gerais, Brazil
Size: 18x13 cm
Indicolite - Blue variation of Tourmaline (Li-traces)
Cyclosilicates
Na(Li,Al,Mg,Mn,Fe)3Al6(BO3)3[Si6O18](OH)4
Minnesota, USA
Size: 7 cm
Zoned blue-yellow Fluorite
Halides
CaF2
Illinois, USA
Size: 10 cm
Zoned green-purple Fluorite
Halides
CaF2
Illinois, USA
Size: 9 cm
Purple Fluorite
Halides
CaF2
Kansas, USA
Size: 12cm
Green Fluorite
Halides
CaF2
Hebei, China
Size: 8x7 cm
Yellow Fluorite
CaF2
Hebei, China
Size: 21cm
Ruby (red variety of Corundum) in Zoisite
Oxides
Al2O3
Burma
Size: (Top) 26cm
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