In September a cushion-shaped 5.44-carat Paraiba tourmaline ring flew past its US ... prices reached US$2,000 per carat at shows when the gem was introduced. Only small deposits were discovered ...

The history of this rare stone is documented in Paraiba: The Legacy of a Colour, written by Kevin Ferreira, a gemmologist and specialist in this specific tourmaline ... $2,000 per carat at gem ...

This 3.28-carat Paraíba tourmaline's vivid violetish blue hue rivals the finest sapphires. Because of this tourmaline's rarity, its per-carat price is also likely to rival the price ... Dealers ...

Zendaya wore a Bulgari high jewel necklace featuring a 31-carat Paraíba tourmaline to the 82nd Golden Globes. Tonight, their jewelry lexicon included a high jewelry statement necklace of 12 pear ...