Mining The Most Valuable Brazilian Gemstone in The World: The Neon-Blue Tourmaline Discovered By A Miner in The Northeast Is Worth More Than Diamonds and Captivates The World Débora Araújo 08/10/2025 at 12:07
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Science and Technology Meet Paraíba Tourmaline, the Precious Stone Worth a Surreal R$ 4.5 Million Per Gram Roberta Souza 11/07/2024 at 09:33
Industry Paraíba Tourmaline: Discover the Magnificent Gemstone That Has ‘Its Own Light’: One Gram of This Stone Can Be Worth Up to R$ 4.5 Million Roberta Souza 29/05/2024 at 17:08
