Maybe est clean 98-99% or little inclusion. For star is clear or sharp, waw you can see in video color is royal blue but have luster too, so you can see more beautiful or nice stone , and im very like this stone because very crystal or body glass. This stone has no lab results but I will help to make it if you have bought. More Light or very bright.The item "Natural Royal blue sapphire star srilanka 11.50ct big size ceylon Rare deep blue" is in sale since Tuesday, May 30, 2017. This item is in the category "Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Sapphire\Natural Sapphires". The seller is "uyuypink" and is located in Jakarta Barat. This item can be shipped worldwide.