Identification of melee size synthetic coloured diamond for jewellery

The mineral zoisite is a calcium alumosilicate belonging to the class of silicates, more exactly sor

Amber was recently discovered by local coal miners at the Thanbaya Gaing Coal mine located 6.5 km no

Sixteen rough diamonds were acquired in 2023 by co-author TTS from a gem dealer linked to Mong Hsu,