Lapis Lazuli from the Coquimbo Region, Chile
Lapis lazuli has been mined from the Coquimbo Region of Chile since 1905.
A Status Report on Gemstones from Afghanistan
An overview of the plentiful and various gem materials being discovered and produced in Afghanistan.
Cobalt Glass as a Lapis Lazuli Imitation
The properties of a novel gemmological imitation, cobalt glass.
Lapis-Lazuli from Sar-E-Sang, Badakhshan, Afghanistan
lapis-lazuli is an ornamental stone (figure 1) that has been found in the artefacts of some of the oldest known civilisations.