Beautiful handmade engagement ring set with a certified natural unheated transparent blue rectangular cut sapphire weighing a total of 4.02 carats mounted in a four claw, open back setting, accompanied by two round brilliant cut diamonds, one on either side, weighing a total of 1.60 carats in open back four claw settings, all mounted in platinum. Hallmarked 950, stamped CFTM. UK finger size 'M 1/2'. Sapphire Certification: The Gem & Pearl Laboratory - 4.02ct 18888