The auctioneer will put up for sale a rare ring from Austrian jeweller Schullin, a handmade platinum piece featuring a 49,88 carat Paraiba Tourmaline gemstone and 60 diamonds, estimated to be ...

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 ...

Birthstone for October Tourmaline is the modern birthstone for October. The gem comes in a range of colors, such as pink, red, green, blue, violet and black.

Tourmaline has been mistaken for other gems in the past. For instance, "Caesar’s Ruby" is not actually a ruby − it is, in fact, red tourmaline, the Institute reports.