| | Français | Deutsch | Espanhol | Italiano | | Português | English |  |
| Geology | ||
| 2.6
billion years – Transvaal (South Africa) - the oldest
emeralds in the world. 2 billion years – Carnaíba and Socotó (Bahia-Brasil). 500 million years – Santa Terezinha (Goiás-Brasil) and Itabira (Minas Gerais-Brasil). 65 million years – Muzo and Chivor (Colombia) - among the “youngest”. 40 million years – Habachtal (Austria). 23 million years – Swat Valley(Pakistan). 9 million years – Gilgit (Paquistan) - practically children. |
||
 |
| The Stone Bed | Geology |
