Ceylon Yellow Sapphire gemstones are regarded a good choice as These are almost wholly very clear on the bare eye i.e. ‘eye-cleanse'. They can't be absolutely free from inclusions and crystal or feathers are the ones usually present in natural Ceylon Yellow Sapphires. Sri Lanka’s Competitive Gain Sri Lanka’s gem https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share