the Pen Tube is Made of Premium Metal, & Will Not Rust or Fade, Top Diamond is Made of Clear Transparent Glass. the Top of the Crystal Pen is Inlaid with a Transparent Rhinestone, Making It Look More Elegant & Attractive. the Rhinestone is Tightly Wrapped in a Metal Holder & Will Not Fall Out. the Appearance of Diamond Pen is Smooth & Comfortable to Hold. Suitable for Offices, Schools, Conference Rooms, Hotels, Reception Rooms, Weddings, Parties, Etc. It Can Also be Used as a Gift for Birthdays, New Years Day, Christmas, & Other Important Days. It is a Perfect Gift for Childrens, Girls, Classmates, Ladies, & Girlfriends.