Some Pukhraj stones come with natural inclusions and blemishes that degrade their splendor and visual appearance. For that reason, they experience heating procedure, which increases the stone’s clarity. You may determine some yellow sapphires with the proper gemological resources. Employing a spectrometer, you’ll see a few absorption traces merging at https://social-medialink.com/story3312391/natural-yellow-sapphire-from-sri-lanka-no-further-a-mystery