Unheated Tanzanite Crystal Specimen from Merelani, Tanzania – 10.02 carats Oregon Beautiful and pinkish purple spinel

Beautiful and pinkish purple spinel octahedron on matrix from Tanzania

When exposed to a polarized light source

The question whether to call it aquamarine or emerald is still in debate

Tiger iron originates from ancient banded iron formations created over 2

Unheated Tanzanite Crystal Specimen from Merelani, Tanzania – 10.02 carats Oregon Beautiful and pinkish purple spinelA rare and highly collectible unheated tanzanite crystal showcasing natural pleochroic coloration in soft violet and subtle golden brown tones. This well formed crystal displays a classic elongated prism habit with a naturally terminated top and excellent vertical striations along the prism faces. Unlike heated material, this crystal retains its original trichroic character, revealing multiple color directions depending on viewing angle through a