Padparadscha Sapphires: The Definitive Collector's Guide to the Sunset Gem

If you find a gemstone labeled as a padparadscha priced under $5,000 per carat today, you're likely holding a common peach sapphire or a stone compromised by Beryllium diffusion. True padparadscha sapphires are so rare that they account for less than 1% of all gem-quality corundum pulled from Sri La …