This was purchased about 35 years ago when I went to China. I am unable to provide details about the material. I recall purchasing them for around 2,000 to 3,000 yen each at the time. The ink does not come out, but I believe it can be used by replacing the cartridge. [Luxurious Design] This ballpoint pen is made of gold-colored metal with decorative elements, giving it an elegant impression. [Comes with a Case] A beautiful case is included, making it convenient for carrying and storage. It will protect your precious ballpoint pen. - Color: Gold - Material: Metal - Design: With decoration - Accessories: Comes with a case Thank you for looking. Please consider this item after understanding that it has been stored at home and is an old item. No returns or exchanges. No price negotiations. Thank you for looking.