Reproduced with kind permission from the National Gem and Jewellery Authority By Dunil Palitha Gunasekera Dip. Gem, F.G.A,-President Crystals Gallery -Gem Lab, 28,Batugedara, Ratnapura, Sri Lanka. Long mistaken for green peridot, dunilite was identified in 2000 as a new gem variety from olivine group. It is an orthorhombic , magnesium, iron, manganese silicate. Though the […]