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NEST BOXES & REFUGEES FOR WILD GARDEN ANIMALS
GEMAS. GUÍAS DE LA NATURALEZA
Bonewitz R. L.
Con esta guía concisa, precisa y de fácil manejo, el aficionado a la gemología podrá identificar sin ningún problema las más de 400 gemas de cualquier lugar del mundo. Abarca todos los grupos principales de gemas, incluidas las piedras talladas, los metales preciosos y las gemas orgánicas. Las impresionantes y detalladas fotografías muestran cada una de las gemas y destacan sus facetas y características clave. Los perfiles ilustrados detallan las propiedades esenciales de cada gema y proporcionan una información rápida y accesible.
