I'm selling this because I found it while cleaning out my parents' house. Both the earring post and the clasp are stamped with k18. The weight is approximately 0.62g, but most of that is the weight of the pearl(s), so I don't think the gold itself weighs that much. This is a single earring. - Color: Black - Weight: Approximately 0.62g - Material: Black pearl(s)? and k18 Thank you for looking.