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The Gem Academy

3 Videos (Page 1/1)

5:59 Conversational English (UK)

How to identify NATURAL diamonds - Testing diamond type

The Gem Academy - 4 years ago

425 views
4:09 Conversational English (UK)

Blue nuance in HPHT laboratory-grown diamonds - How to spot!

The Gem Academy - 4 years ago

1,287 views
8:54 Conversational English (UK)

Laboratory-grown diamonds v. Multitester. Unexpected results! Testing diamonds

The Gem Academy - 4 years ago

3,104 views
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