Really wonderful Gem Stones they have…i purchased a Ruby from them on the internet..and it turned out very nice and was worthwhile… ” variety inclusions. If a yellow sapphire has long been heated at a high temperature these feathers are ruined and are effortlessly identifiable by a qualified gemologist Recognize: https://www.apsense.com/article/810029-some-historical-facts-about-sri-lankan-yellow-sapp.html