Articles 708 Coloured Stone Mining and Trade in Brazil: A Brief History and Current Status By Aurélien...Collection V. L. Villani photo p. 758 Cover Photo: Brazil is the source of a variety of coloured stones,...7.99 ct amethyst, 3.29 ct tourmaline, 2.40 ct aquamarine, 1.12 ct Imperial topaz and 4.84 ct golden beryl...Mong Long, gems such as tourmaline (Figure 4d), aquamarine, spessartine, quartz, topaz, zircon and phenakite...pegmatites are a source of beautiful ‘sky’ blue aquamarine crystals. Six tourmaline samples from Mong Pai |
Grota da Generosa mine, Sabinópolis, Minas Gerais, Brazil