Some beautiful mineral specimens (up-down, left-right): 1.-...

Cacoxenite


Uvarovite


Kammererite


Tourmaline


Tree fossils with Opal growth rings


Tree fossils with Opal growth rings


Fluorite


Crocoite


Clinoclase


Vanadinite crystals on white Barite

Some beautiful mineral specimens (up-down, left-right):

1.- Cacoxenite

2.- Uvarovite   3.- Kammererite

4.- Tourmaline

5 & 6.- Tree fossils with Opal growth rings

7.- Fluorite

8.- Crocoite    9.- Clinoclase

10.- Vanadinite crystals on white Barite

Via Distractify: These 32 Mineral Specimens Are Stunningly Beautiful (includes links to original sources)