The gemstone deposits of Brazil: occurrences, production and economic impact

The Gemstone Deposits of Brazil PDF, PDF, Gemstone

Gemological map of the State of Piauí (Oliveira, 1998 – CPRM).

Amethyst Cluster 3.11 with Stand Brazilian Collectible Specimen, Includes Display Case - Mini Museum

Amethyst Cluster - SOLD 6.05 with Stand - Brazilian - Mini Museum

Minerals, Free Full-Text

Vietnam is a contemporary source of several gem varieties, including

SciELO - Brasil - Aquamarine from Massangana batholith, Rondônia State: mineral chemistry and fluid inclusion data Aquamarine from Massangana batholith, Rondônia State: mineral chemistry and fluid inclusion data

PDF] The gemstone deposits of Brazil: occurrences, production and economic impact

The gemstone deposits of Brazil: occurrences, production and economic impact

Anthropic Vulnerability of a Hydrothermal Mineral Deposit and Related Mining Heritage, a Case Study from a Medieval Gold-Silver Mining Area, Telkibánya, Hungary