Question: who are de beers competitors?
Answer: Alrosa – Rough diamonds. Rio Tinto – Argyle Diamond Mine. Harry Winston – The One, Oval-Shaped Diamond Micropavé Engagement Ring. Tiffany & Co – The Tiffany® Setting Engagement Ring in Platinum. Cartier – Solitaire 1895. De Beers – Old Bond Street Solitaire Ring.