GIA Certified 13.69ct Oval Cut Unheated Blue Sapphire and Diamond Ring

A massive 13ct Natural Unheated Blue Sapphire & Diamond Ring comes to Federal Auction’s next Live Fine Jewellery & Swiss Watch Auction event in Calgary.  This is a Violet Blue color Sapphire, which has been tested by GIA as Unheated.  Due to its size, color, clarity, and unheated nature, this example represents less than 1% of all Sapphires mined.  Most Sapphires are heated to improve clarity.  The auction will also offer over 200 Lots of other finished Jewellery & Swiss Watch example.  Join us on Sunday May 20th, 2018, 1pm at Carriage House Inn, 9030 Macleod Trail South Calgary.  For more info, please visit