These diamond earrings have 0.08 carats per ear, for a total of 0.16 carats. The posts are stamped with K18 and the carat size. Earring width: Approximately 4mm, Post length: Approximately 10mm I found the certificate of authenticity, so I've added photos. The signature has been hidden. The box is damaged, so it will not be included when shipped. Everything in the photos is what you will receive. These are used items, so please refrain from purchasing if you are concerned about minor details.