Era: Modern Estate Composition: Platinum & 18K Yellow Gold Prongs Primary Stone: Heart Shape GRS-type "Royal Blue" Natural Sapphire Carat Weight: 2.27 Carats Origin: Ceylon(Sri Lanka) GRS Report Number: GRS2021-058359 Treatment: Heated Necklace Length: 18 Inches with slide adjustment Necklace Weight: 3.2 Grams Item Barcode: 924782