The 55.22-carat Estrela de Fura is the most valuable ruby ever sold at auction - Copyright AFP TIMOTHY A. CLARY The 55.22-carat Estrela de Fura is the most valuable ...
"If you look at a top-quality, gem quality ruby versus the top quality of a diamond – let's say they're five carats each – the ruby is going to be much rarer and much more expensive than that ...