The Guiness world record holder for largest tourmaline belongs to the Ethereal Carolina Divine Paraiba. Weighing in at a whopping 192 carats, this paraiba completely eclipsed the previous record holder of 52 carats. Paraiba Tourmalines in general are extremely rare, with one being mined for every 10,000 diamonds.
For more information: https://www.gemsny.com/blog/notable-collections-natural-paraiba-tourmaline/1/