Real Ethiopian Opal gemstone guide
51:24
Ethiopian Opal Sale!
2:11
Speaking of Stones: Unlocking Gem Secrets with Infrared Spectroscopy.
17:06
The complete guide to Ethiopian Opals
23:02
Super rare burma star sapphire 300,000$
29:15
Real colombian emerald gemstone guide
14:36
Iolite versus Tanzanite gemstone price comparison
56:04
DAY 4 at the gem and jewelry show in Bangkok Thailand
9:23