Countries of excavation

The first diamonds ever appeared and exploited about 2500 years ago in India.  The very first rudimentary
factory was founded at the same time with the discovery
of diamonds in South Africa, at the late 19th  century.
The four leading countries in diamond production
worldwide produce 50% of rough diamonds.  These
are Australia, Zaire, Botswana, and the former USSR.
South Africa is in the fifth position, followed  by
Namimbia, Angola,  Brazil,  New Guinea, Sierra Leone,
Liberia, Cote d' Ivoire, Ghana, the Democracy of Central
Africa, Tanzania, China, Indonesia and India.