Glass Filled Gems: Zombie Crystals [Treatments]
9:27
That's how you'll find RUBIES and SAPPHIRES - #crystals #gems
11:50
Gemstone Trickery?! [Treatments and Enhancements]
7:01
How much and what type of inclusions does a 3-carat Unheated Pigeon Blood Mozambique Ruby have?
5:28
How to Classify a Lead Glass–Filled Ruby by GIA
16:26
Unheated Sapphire VS Heated Sapphire
8:56
[Gemstone Secrets] How to Avoid Glass and Acquire Gems
17:17
Gemology Tools: What Do I Buy, When?
10:48