Rough Paraiba Tourmaline Value Guide

First discovered in 1989 by Heitor Dimas Barbosa, Rough Paraiba Tourmaline is one of the world's most coveted gemstones due to its unique copper and manganese content. These specimens are prized by collectors for their signature 'electric' or 'neon' glow, a chemical phenomenon that makes them rarer and often more valuable than diamonds.

What affects the value of Rough Paraiba Tourmaline?

• Intensity of the 'neon' saturation, with vibrant turquoise-blue commands the highest market prices.
• The size and weight of the raw specimen, as larger stones are exceptionally rare in this $4,500-$5,000 range.
• Clarity and transparency of the rough crystal, which dictates the potential for high-quality faceting.
• Authentic Brazilian origin, which typically carries a premium over similar copper-bearing stones from Africa.

How to Identify Rough Paraiba Tourmaline?

• Look for the distinctive neon turquoise-blue or 'electric' green hue caused by the presence of copper.
• Verify the specimen as elbaite tourmaline originating from the specific pegmatite mines in Paraiba, Brazil.
• Check for the characteristic raw crystal structure that has not been faceted or heat-treated to enhance color.
• Utilize lab testing to confirm the specific chemical signature of copper and manganese unique to this variety.

History of Rough Paraiba Tourmaline

Paraiba tourmalines were first discovered in the late 1980s by Heitor Dimas Barbosa in the Brazilian state of Paraiba. They are incredibly rare because they contain copper and manganese, elements not typically found in other tourmalines. This unique chemical composition creates a glowing electric blue effect that revolutionized the gemstone world, making them more valuable than diamonds of similar size.