Material: High quality copper and exquisite water drill, it is hypo allergenic, it doesn't rust, change colour or tarnish and it is lead free and nickel free. Package: This necklace will arrive in a velvet bag ready for gift giving.Exquisite packaging, fast transportation, no need to worry about damage in the process of transportation. Size: this piano themed high-quality copper necklace pendant is 2.0cm * 2.0cm, and the chain length is 46cm + 5cm. Please forgive me for the possible error in manual measurement. Perfect gift for a music lover or a piano student on their recital day. Awesome gift for any musician, music student, or music teacher, regardless of their instrument. Gifts are never limited to time, only to express the most sincere feelings. a perfect gift for piano teachers and piano lovers! Your friends will be very satisfied. Necklace