Here is a set of 1.00Ct Blue Sapphire Stud Earrings in 14k yellow gold. This set is part of a collection of estate jewelry that will be auctioned this week. The Sapphires measure 5.1mm and they are bright Blue gems that total approximately 1.00Ct. Sapphire is the September birthstone. This set of 1.00Ct Sapphire Earrings will be auctioned to the highest bidder at $1 No Reserve.