LAB INFORMATION CIRCULAR VOLUME 75 - JANUARY, 2018
Lab Information Circular (Volume 75, January, 2018) is now out, covering the following topics:
- Fake emerald rough - glass filled in mica-rock
- Eudialyte - an unknown gem
- Morado opal
- Resin-filled amazonite
- Quartz with graphite inclusions
- In photos - gems from Namibia