This is a listing for amazing fabulous custom genuine natural Sapphire diamonds and 14k white gold necklace, there is no hallmark it was rubbed off when the necklace was fitted tighter for me, but during the appraisal it was tested it and confirms it is 14k white gold. you can see the deep blue of the sapphires when held up, the true deep color of the most expensive of the sapphires, the pics of the sapphire necklace held up is a bit blurry because it was windy when we were taking the pics for the listing. the pics of the necklace on the jewelry case is darker , which is not the true color, the true color s are the pics of the sapphires held up. This is described as new vintage because it has never been worn out since made years old, just tried on. This amazing elegant necklace has about 82.89 carats of natural genuine sapphires, 96 counts of sapphires each about .86 carat and measuring 7x5x3mm and 11 clarity, and 625 points of diamonds for a total of 6.29 carats of diamonds, each diamond is about .01 and measures about 1.20mm and 11 clarity. thus a total of 89.18 carats of diamonds and sapphires. Please see the GLA appraisal included with the listing, which would be sent to the buyer. Very fabulous unique look . it appraised for over $102,137.00 in Feb of 2007.