Laurentthomasite is a newly found mineral in Madagascar.
Laurentthomasite is a mineral that was recently approved by the International Minerals Association (IMA) in 2019. It's appealing not only as a newly discovered mineral, but also as an excellent translucent and attractively coloured gemstone. We might be able to test some samples in the coming days. I'd like to share our calculated property with you. The basic gemmological property Theoretically is R.I. is 1.540-1.545 (uniaxial +) but our tested samples showed 1.555-1.560 (uniaxial +). The S.G is about 2.67. The crystal system is hexagonal. And it shows strong pleochroism as blue and yellow. The hardness is about 6. Laurentthomasite Related articles Diaspore, the new addition in Afghanistan minerals (Raw Diaspore) Garnet group , Types of Garnet and its identification Techniques. What is Mohs Scale?