Petra Letlapa Tala Collection
Type IIb blue diamonds special tender! Petra Diamonds Limited announces a special tender process for the Letlapa Tala Collection, being five blue diamonds of significant colour, clarity, size and heritage, all sourced from the famed Cullinan Mine in South Africa. Letlapa Tala means ‘blue rock’ in Northern Sotho (commonly known as Pedi), the predominant language spoken in the Cullinan area. The Letlapa Tala Collection consists of five Type IIb blue diamonds of 25.75, 21.25, 17.57, 11.42 and 9.61 carats in size. Type II diamonds contain no detectable nitrogen in their chemical structure and tend to display exceptional transparency. Type IIb stones contain a small amount of boron which is what determines their blue colour. Blue diamonds are so rare that most people working in the diamond industry have never even seen one. There are no official statistics on their recovery, so it is therefore even more unusual that these five spectacular stones were all recovered...