Paraiba Tourmaline is famous for its broad blue-green spectrum and surprisingly, it's more expensive than many gems on the market. It can fetch up to $100,000 per carat. The equally famous "neon blue" and other colors are apparent even in the raw stones.This color range is one of the reasons for Paraiba Tourmaline's popularity. In jewelry design, color is a critical major asset. The unique spectrum of Paraiba Tourmaline makes it...

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Vivid blue to green copper-bearing tourmalines, known as Paraíba tourmalines, are recovered from deposits in Brazil, Nigeria, and Mozambique.

Gem-quality bright blue to green “Paraíba”-type Cu-bearing tourmaline is now known from deposits in Africa (Nigeria and Mozambique), in addition to three commercial localities in Brazil (in Paraíba and Rio Grande do Norte States). Stones from these new localities have been mixed into parcels from the original Brazilian Paraíba occurrence. The Nigerian and Mozambique tourmalines that show saturated blue-to-green colors cannot be distinguished from the Brazilian material by standard gemological...