Gemstone descriptions as provided by GRS: Certificate issuance date……………………….22nd December 2025 GRS Report Nr…………………………………..GRS2025-127286 Species………………………………………………..Natural Corundum Variety ………………………………………….Natural Sapphire Weight.…………………………………….…………….5.11 carats Shape……………………………………..Cushion Cut……………………………………………….. Mixed Brilliant Cut Measurements…………………………9.07 x 8.86 x 5.98 mm Clarity…………………………………………Slight (Almost Eye Clean) Color…………………………………………… Deep Blue (see pictures!) Treatment…………………………………..No Indication of Thermal Treatment Origin……………………………………………..Ceylon, Sri Lanka Certified By……………………………….GRS (Scan provided QR-Code) This 1 piece of a natural and untreated transparent sapphire with deep color weighs 5.11 ct. and was selected by Lorina GmbH and sent to GRS Laboratory in Meggen, Switzerland. This item is accompanied by the following gemological report. We will ship the original report along with the item. GRS Gem Research Swisslab Report # GRS2025-127286. The accompanying GRS report authenticates this gemstone as a "Natural Sapphire" with a comment stating "No indication of thermal treatments“. Country of Origin is an opinion offered by the seller of the item; this opinion is not substantiated by an official opinion of the Laboratory. All photos are enlargements, taken with a macro lens and properly exposed, and are intended to honestly and accurately depict any imperfections in the stone. It goes without saying that these are much less visible to the naked eye. All our gemstones are 100% Natural & Untreated... No Heating, No Filling, No Diffusion, No Radiation, No Bleaching, No Chemicals, No Treatments... Nothing but Natural Gemstones - mined from Earth. We ship worldwide to all countries. We offer insured international shipping on all Orders.