THE origin of the volcanic pipes of South Africa and the genesis of the diamonds contained in their “blue-ground” filling are as productive of controversy as that other geological puzzle—the ...

(IDEX Online) - Gem Diamonds today (29 January) reported a dip in quarterly revenue but a year-on-year increase of 10 per ...

Aim-listed Botswana Diamonds has analysed and evaluated nearly ... In particular, the company has identified seven significant kimberlite targets on existing licences that have not been reported ...

But those numbers don't tell the full geologic story ... is a totally independent event." Because diamonds are distributed ...