Stamps Category Minerals

2873 - 250th Anniversary of the Mining Academy in Freiberg
Manuel Briones
B1059 - Precious Stones
Manuel Briones
311 - Minerals from Tanzania
Manuel Briones
Mexico exports wrought iron
Pedro Gruenholz
minerals
David Merino Gňmez
Agate
carlos ródenas ferré
Carnelian - gemstone
Nelida Fernandez Besada
Mushrooms and Minerals: Russula
gines Moral
Mushrooms and Minerals: Morchella esculenta
gines Moral
Mushrooms and Minerals: Clitocybe Infundibuliformis
gines Moral