This is a lovely 10k gold blue sapphire and diamond pendant necklace. The pendant measures 20mm long and 13mm wide. There are 25 small diamonds surrounding a marquis cut sapphire that measures 9mm by 4mm. The stone is being tested to see if it is a true sapphire or man made.The chain is 10k and measures 19 inches long. Total weight is 1.8 grams. Just stunning!!