Recomiendo ampliamente esta pagina para Ciencia y Exploracion Geologica del Ing. Geologo Luis Perez:
MINERALOGY. The most beautiful specimens from all over the world, from pyrite to rubies, a little bit about their name and common location, general narrative about Mineralogy from Mexican Geologist | Mineralogist Oscar Garcia Shelly.
Beryl var. Esmerald from the Muzo Mine, Mun. de Muzo, Vasquez-Yacopí Mining District, Boyacá Department, Colombia.
Largest crystal measures approx. 25 mm.
