This is a cotton pearl necklace from Sirena Azzurro. It is K10. The length is adjustable, up to approximately 45 cm. I purchased it and wore it for a few hours at a wedding only once, and have kept it stored at home since then. There are no major scratches, but due to the nature of the material, cotton pearls have an uneven texture and some may be thin. Therefore, if you are looking for a perfect item, please refrain from purchasing.