1.18 ct. Pear Shape, Deep Bluish Green Tourmaline [TU-042] $95.00

Shape = Pear Color = Nice Deep Bluish Green Clarity = Eye Clean Size = 10x4 Weight = 1.18

Tourmaline Gemstones

• Crystal system: Trigonal
• Chemical composition: Borosilicate complex
• Color: Green
• Hardness: 7.0 - 7.5
• Specific gravity: 3.06
• Refractive index: 1.62 - 1.64
• Dispersion: 0.017
• Pleochroism: pale green, dark green
• Enhancements: Some very dark green and dark blue green tourmalines are heated to lighten their colors. The treatment is permanent and only occasionally performed.