18KT Hallmark 750 Purity gold Jewelry in Yellow. 100% 18KT gold 750 equivalent, Stamped and tested. The 18KT has 75% gold purity and is more reliable than 18KT. Jewelry comes with HUID number which is given to each jewelry we sell. Very pretty in person This can be a Great for gift. Remember this item is not plated or. It is made up of solid 18K gold. Please make sure this is the item you want before you pay. Thank you for visiting our Shop. Happy shopping with dazzlingdiamondhub. Your feedback is very important to us. If you have any queries related to the product or service you can expect a reply within 12-48 hours of inquiry. Track Page Views With.