20:14

$6000 investment - The best cut ever - Rare Harlequin Black Opal

26:52

Rough opal can be risky business - The outcome is incredible

37:22

The Most STUNNING And GLAMOROUS Opal Ever Discovered! | Outback Opal Hunters

19:23

Meksika Agatlarının İçinde Ne Var?! Akik Kesme Açık

50:49

Zümrüt neden elmastan daha çok beğeniliyor?

28:05

Prospecting for Blue Sapphires and Gemstones!!

20:03

Vietnam Unearthed: Ruby, Spinel, Sapphire and more, explore gemstones and gem mining in Luc Yen.

25:18

$5k invested in rough opal. Do I make a profit from my opal hunting?