Lujala, Paivi 2009. Deadly Combat over Natural Resources: Gems, Petroleum, Drugs, and the Severity of Armed Civil Conflict. Journal of Conflict Resolution 53(1): 50-71.
Distance to gemstone deposits, measured in meters.
Consists of 1022 gemstone sites in 61 countries. It include ruby, sapphire, emerald, aquamarine, heliodor, moganite, goshenite, nephrite, jadeite, lapis lazuli, opal, tourmaline, periodit, topaz, pearl, garnet, zircon, spinel, amber, and quartz. It excludes diamonds, which are included in the diamond deposit dataset. Dataset downloaded August 2017.
environment, resources, gemstone, raster