Jewellery items set with enamel and Kundan do the job should really never be washed or place into an ultrasonic equipment. ” kind inclusions. If a yellow sapphire has actually been heated in a high temperature these feathers are destroyed and are very easily identifiable by a properly trained gemologist https://www.apsense.com/article/810029-some-historical-facts-about-sri-lankan-yellow-sapp.html