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Big Blue Diamond Found by Struggling Petra at Flagship Mine

Petra Diamonds has found a 20.08 carat blue stone at its flagship mine in South Africa, offering some relief to struggling miner.

Big Blue Diamond Found by Struggling Petra at Flagship Mine
20.08 carat blue diamond. (Source: Petra Diamonds)

(Bloomberg) -- Petra Diamonds Ltd. has found a 20.08 carat blue stone at its flagship mine in South Africa, offering some relief to a miner struggling with weak demand and a mountain of debt.

The company said it found the gem quality Type IIb diamond at its Cullinan mine, famous for producing expensive gems, including those in the British crown jewels. While Petra gave no forecast on the price, blue gem quality stones are among the most valuable in the world.

Big Blue Diamond Found by Struggling Petra at Flagship Mine

Petra’s share price has collapsed to a record low amid falling diamond prices and concerns that it will struggle to repay debts. Last week it wrote down the value of its mines by almost $250 million and said co-founder and Chairman Adonis Pouroulis will depart, after its long-serving chief executive officer left earlier this year.

Big Blue Diamond Found by Struggling Petra at Flagship Mine

Petra has slid from a peak value of more than $1.5 billion as it redeveloped the Cullinan mine, where the world’s biggest diamond was found in 1905. The cost of that project saw Petra’s debts swell, just as the diamond market weakened.

Still, the mine continues to produce exceptional stones, including a 425-carat white color stone earlier this year.

“With Petra’s balance sheet under focus, the recovery and sale of special diamonds incremental to cash flow forecasts represents a positive for the stock,” said BMO analysts Edward Sterck. “For reference, a 30-carat blue diamond from Cullinan was sold for $26 million in 2014.”

Petra pared earlier losses of as much as 4.9% to trade down 2.3% as of 3:37 p.m. in London.

To contact the reporter on this story: Thomas Biesheuvel in London at tbiesheuvel@bloomberg.net

To contact the editors responsible for this story: Lynn Thomasson at lthomasson@bloomberg.net, Dylan Griffiths, Nicholas Larkin

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