In September a cushion-shaped 5.44-carat Paraiba tourmaline ring flew past its US ... rubies and emeralds, but these neon-turquoise Paraiba tourmalines are now up there jostling with the world ...
In particular, the Brazilian Paraibas - with their rare, intense, neon-bright glow - are incredibly ... when a 15.37-carat cushion-cut Paraiba tourmaline from Nigeria sold for HK$1.21 million.
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