SINCE 1954 a prospecting programme for diamonds in the British Protectorate of Basutoland has led to the discovery of a new predominantly basaltic kimberlite province to the east of the micaceous ...

Botswana Diamonds has secured a prospecting permit for five diamond-bearing kimberlites in the Marsfontein area of South ...

they are the primary source of those dazzling objects that have been the source of much fascination and conflict — diamonds. The Udachnaya-East kimberlite pipe in Siberia, less than a kilometre ...