LAB INFORMATION CIRCULAR, VOLUME 78, MAY 2021, IS NOW OUT!
We are pleased to present the latest Lab Information Circular (Volume 78, May 2021), covering the following topics:
- Transparent Gem-Quality Rhodonite
- Heterosite-Purpurite: An Interesting Ornamental Gem
- Green Kyanite, Imitating Emerald
- Zoisite, Dyed to Imitate Ruby and Emerald
- Type IIA Diamond with Interesting Laser Drilled Holes
- ‘Resin-Filled’ Corundum String
- GJEPC-GTL introduces Low-Cost Screening of ‘Melee-Sized’ and ‘Polki-Cut’ Diamond Packets
Download