Petra has recovered 5 high quality blue #diamonds at the #Cullinan mine in South Africa over the space of 1 week, ranging from 9 to 25 cts in size; blues are so rare that there are no official statistics, however the Cullinan mine is known as the world's most important source pic.twitter.com/yfCwW0s1J4 — Petra Diamonds (@Petra_Diamonds) September 16, 2020
Petra has recovered 5 high quality blue #diamonds at the #Cullinan mine in South Africa over the space of 1 week, ranging from 9 to 25 cts in size; blues are so rare that there are no official statistics, however the Cullinan mine is known as the world's most important source pic.twitter.com/yfCwW0s1J4