Petra Diamonds Limited (PDL.L) Stock Analysis & Winston Score

Petra Diamonds is a mining company that digs diamonds out of the ground and sells them to diamond dealers, jewelers, and cutting houses around the world. It operates some of the oldest and most well-known diamond mines in the world, including the Cullinan mine in South Africa — the same mine that produced the famous Cullinan Diamond, the largest gem-quality rough diamond ever found. The company works in the Basic Materials sector and focuses entirely on rough diamond production. Petra makes money by selling rough diamonds at tender sales, where buyers bid on parcels of stones. Most of its operations are in South Africa, with a mine also in Tanzania. The company is relatively small, and its financial metrics show it has been spending more than it earns, with negative margins and returns on capital. The main risk facing Petra is the continued weakness in global rough diamond prices, which have fallen sharply in recent years, putting serious pressure on the business's ability to stay profitable.