How to Classify a Lead Glass–Filled Ruby by GIA
9:29
Glass Filled Gems: Zombie Crystals [Treatments]
12:02
From Rough to World Record - Estrela de Fura - 55.22 ct
11:06
How to Check Synthetic Ruby Under a Microscope - Curved Striae, Gas Bubbles, and Quench Crackled
4:38
How to tell the difference between Unheated Ruby & Lead Glass Filled Ruby?
1:04:54
Furnaces, Fluxes and Filling: A Review of Ruby Treatment | GIA Knowledge Sessions Webinar Series
10:48
Best Gemstone Tool
8:32
Inclusions you might find in a Ruby
58:05