JOHANNESBURG (miningweekly.com) – London-listed Stellar Diamonds has secured a two-month extension to the longstop dates with the noteholders of its two outstanding convertible loan notes. “Stellar is undergoing a transformation from an explorer to a mine developer. I would like to thank the noteholders for their continued support as we progress towards the commercial development of the 4.5-million-carat Tongo-Tonguma underground kimberlite diamond mine, in Sierra Leone,” said Stellar CEO Karl Smithson on Friday.