Source Tango website:

https://tangomining.com/wp-content/uploads/2016/04/TGV-Presentation-4.2016.pdf

For people who don't see it.... look all the presentation.

Other fact. 

The diamondiferous BK11 kimberlite pipe is located within the Orapa Kimberlite Field (“OKF”)  in northern Botswana and contains rare and valuable Type IIa diamonds.. BK11 is located approximately 10 kilometres west and 20 kilometres southeast of De Beers’ Letlhakane and Orapa mines, respectively, and is within 5 kilometres of Lucara’s Karowe mine.

Source Tsodilo website:
https://www.tsodiloresources.com/s/Diamond.asp?ReportID=609945
 
 In 2015, 11 million carats of diamonds were mined in the OKF and produced such notable diamonds as the 1,109 carat ‘Lesedi La Rona’ and the 813 carat ‘Constellation’ from Lucara Diamond Corporation’s Karowe (AK6) mine.


May 9 2016 news release.
Lucara Sells Its 813 Carat Diamond for US$63 Million, the Highest Price Ever Achieved for the Sale of a Rough Diamond.

June 29 2016 news release.
("Lucara" or the "Company") reports that the Company will be retaining the exceptional 1,109 carat Type IIa Lesedi La Rona diamond as bidding did not meet the reserve price at the auction held this evening at Sotheby's in London.

They ask a minimum of US$78 million for the big stone......!!!!

Lucara"s Karowe mine is at only 5 KM of BK11 diamond mine.
 
GLTA Put your share in a strong box.

Raypar