Tanzanit
17:59
Drahý opál
14:52
Czy na pewno Tanzanit to bardzo drogi kamień szlachetny?
24:40
Turmalín
19:41
Rubín
12:02
2025 Tucson Gem Shows- Rockaholics @ RMGM Show - Along Tucson Mineral Mile
20:18
Ágata perfeita encontrada enquanto caminhava no Lago Superior [Achados de corte em serra lapidária]
36:08
Vltavíny z jižních Čech II.
51:22