Madagascan Danburite / 5.8 x 3.7 mm / 0.57ct / Emerald cut / CaB₂(SiO₄)₂ - Calcium Boron Silicate / Orthorhombic crystal system / Mohs 7 - 7.5 x NFS

u/Kubrick_Fan — 21 days ago

A new find from Morocco this year. An unusually stable Melanterite that survived extraction, storage on site, transportation to the UK and five summer heatwaves in a non air conditioned warehouse

u/Kubrick_Fan — 1 month ago