Found, Lost, and Found Again: The Geological and Gemological Significance of the Salininha Emerald Deposit, Brazil
Rainer Alois Schultz-Güttler, Andressa Roberta Borotti, Ivan Pereira Marques, André Luiz Silva Pestilho
Gem zircon and sapphire age dating and application of origin determination: A study from New England sapphire fields, New South Wales, Australia
Ahmadjan Abduryim, Frederick Lin Sutherland, Terry Coldham, Elena Belousova Download Pdf
