IGI Certified Australia Natural Dark Blue Sapphire 1.06 carats - Transparent. IGI CERTIFIED Australia Natural Dark Blue Sapphire Square Cut 1.06 carats - Transparent - comes complete sealed with Certificate as shown. Measurements :- 6.12 - 5.75 x 3.67 mm. We greatly appreciate good feedback and high ratings, please bear this in mind before leaving us low ratings and message me first before leaving poor ratings as I will resolve any problems you have, you, my customer comes first! All inquiries will be answered within 24 hours.We trade 365 days a year and do not close for business.