“The Crimson Flame,” an exceptionally rare Burmese ruby sold for $18.3 million, setting a world auction record per carat of $1.2 million at Christie’s Hong Kong sale of Magnificent Jewels Tuesday. The ...
"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 ...