Laboratory Diamond Jewellery › 1.64ct Lab Diamond Studs- SQ9806288 Image 1 of 1 1.64ct Lab Diamond Studs- SQ9806288 $2,880.00 9kt White Gold Lab Diamond Stud Earrings with a TDW of 1.64cts. F SI1. Add To Cart Added! 9kt White Gold Lab Diamond Stud Earrings with a TDW of 1.64cts. F SI1.