http://www.cigem.ca/brazil/brazil.html
Nova Era emerald mines, Brazil

http://www.cigem.ca/idar/idar.html
A tour of Europe’s gem center

http://www.desertusa.com/magnov97/mine_nov_97/mine1.html
Rockhounding at the Himalaya mine for tourmaline

http://www.uidaho.edu/~mgunter/geol249/latah/latah.html
The Mineralogy of Latah County, Idaho

http://www.cigem.ca/opal/opal.html
A tour of a Mexican opal mine

http://www.intranet.csupomona.edu/~drjessey/ftrips.htm
Mojave mining district field trips from David Jessey at Cal Poly Pomona

http://www.cigem.ca/srilanka/sri.html
Gem mining in Sri Lanka

http://www.cigem.ca/thailand/thai.html
Gemstone production Thailand