This stone had a certificate card from GIC showing no heat.   I agreed to purchase if I could have an independent lab verify.  They agreed to let me take the stone to the woman gemologists I normally deal with in Sri Lanka as I know she does a thorough job and has the necessary equipment.  The seller assured me it was unheated as he had mined the stone himself.   The certificate came back as unheated so I gave the guy the agreed upon price.  The color was very pretty and it came back as cornflower blue as I was thinking it was.   I used the dimensions on the more expensive folder certificate which are very slightly different than the folder certificate.   

Both certificates are verifiable.   The folder is verifiable online both by the square with mobile device and through the website by ref. no : A113502.   The card you need to call or email that lab.  

 Unheated Ceylon sapphire.   Eye visible inclusions, still a very beautiful stone.   Most larger sapphires are never eye clean.  Slight natural inclusions present. Very high luster with nice fully reflective cutting.  This is the type of cutting and full intense fire from within the stone that one would be looking for in any top piece of jewelry.  
Certified unheated sapphire.  Rivermined gemstone.  Ratnapura means gem city translated.  25% of Ceylon is thought to be covered in gem gravels.
Rivermined sapphires are always best because they tend to be more rounded for easy cutting. Mining costs less and the sapphires are better quality because of the outside included edges getting worn away during their travel.  
100% natural untreated gem.
Slightly included to the naked eye.   
10% off listed price for direct wire transfer over PayPal.   Please contact me for bank transfer details to my business account.