Russia is not an opal mining country, but a few historical opal mines do exist. This sample was collected somewhere in the Altai mountains
during the late 19th century.
[photo/collection: Maurice de Graaf]
Opal
Russia is not an opal mining country, but a few historical opal mines do
exist. This sample was collected somewhere in the Altai mountains
during the late 19th century.
[photo/collection: Maurice de Graaf]