Discovered in Brazil in the 80s, these stones are bringing new colour to high jewellery ...
In September a cushion-shaped 5.44-carat Paraiba tourmaline ring flew past its US$60,000 upper estimate in auction at Bonhams New York to sell for US$533,900. This is bidding territory more commonly ...
The Washington Post1 年
Rich lode of EV metals could boost Taliban and its new Chinese partners
Miners work to extract gemstones including kunzite and tourmaline in a mine in the Parun Valley in Afghanistan's Nurestan province. In doing so, they unearth lithium-bearing ore. Warning ...