Colored Stone Update

Intense yellow green (Canary type) tourmalines from Zambia (Lundazi district, eastern Zambia) is the talk of the town + the stones are mined in eluvial/alluvial and primary deposits + most of the tourmalines are heat treated (550-550°C) to reduce the brown/orange tint + stones of mixed sizes (melee +) are encountered in the marketplace + if in doubt always consult a reputed gem testing laboratory.