K18WG necklace. The aquamarine charm is removable. *Please note that the weight is measured on a scale with 0.5g increments. This was passed down from my mother, and neither she nor I have used it, but it has been stored at home. Since it has been in someone's possession once, please only purchase if you understand that it is a used item. The box is not included. It will be wrapped in cushioning material and carefully packaged to prevent damage during shipping. Please feel free to contact me if you have any other questions. *Shipping is generally closed on weekends and holidays. If you are in a hurry, please consult in the comment section before purchasing. *Due to work, I may be slow to respond, but I will reply within 2 days at the latest, so please understand. *Please also check the profile section before purchasing. Material...K18 (18k gold)