Tourmaline Crystal — Pederneira Mine, Brazil, 7.2 g

A natural, untreated tourmaline crystal from Pederneira Mine in Brazil. This slender specimen measures approximately 70 mm in length and has no reported treatments or repairs.

• Mineral: Tourmaline
• Locality: Pederneira Mine, Brazil
• Specimen weight: 7.2 g
• Dimensions: 8.5 × 5 × 70 mm
• Treatment: Untreated
• Repairs: None

All measurements are approximate.