Natural Untreated Tanzanite Crystal — 12.25 g

This natural, untreated Tanzanite crystal from Merelani, Tanzania displays striking blue and blue-green tones under transmitted light, with a violet-blue appearance from another viewing angle. Its elongated crystal form features visible growth striations, a distinct termination, and natural internal features.

Weighing 12.25 grams, this specimen has not undergone heat treatment or other reported enhancements.

• Mineral: Tanzanite (zoisite)
• Weight: 12.25 g
• Dimensions: 16.5 × 11 × 37 mm
• Locality: Merelani, Tanzania
• Treatment: Untreated

All measurements are approximate. Color appearance may vary with lighting and viewing angle.