Uncommon Gemstones

Yellow green clinohumite and yellow chondrodite are often confused for tourmaline (s) because of its unusual colors + I have seen a few specimens in Bangkok, usually sold by dealers from Tanzania and Kenya, often mixed up with other rough colored stones + even experienced dealers go autistic when they see a mixed lot, sometimes you may have to cut and polish a few specimens to know their true identification, not always practical + if in doubt always consult a reputed gem testing laboratory.