25 juin 2013
Erythrite, Smithsonite, Chalcedony, Syenite, Nepheline, Cyanotrichite, Chalcophyllite, Azurite, Malachite
Azurite and Malachite inlay in a Black Walnut shell Cyanotrichite and Chalcophyllite by Bruno Marello Syenite rock under ultraviolet: the mineral Nepheline is in red (by someHerrings) Smithsonite crystal in Chalcedony geode Erythrite from Morocco