Indicolite tourmaline - Santa Rosa mine, Itambacuri, Minas...
Rare blue tourmaline (copper-bearing) with some hints of green...
Small tourmaline well terminated.
1.90 carats - 1.3 cm
Rare blue tourmaline (copper-bearing) with some hints of green...
Rare blue tourmaline (copper-bearing) possessing some hints of...
Undammaged, bright, biterminated crystals of "green cap"...
Rare blue tourmaline (copper-bearing) possessing some hints of...
Floating group of small green uvite (tourmaline variety)...
Bright black tourmaline veneer with fibroradial...
Tourmaline crystal with a superb blue (indicolite) and green...
Tourmaline crystal with a superb blue (indicolite) and green...
Bright, well-formed, biterminated floating crystal of...
Association of shiny black tourmaline and white quartz...