This contains a sample of lunar olivine. I received it when I participated in a university event. It's unused and not sealed, but I haven't taken the contents out. It seems like there's also a sticker-like item included. - Type: Olivine - Brand: ESEC - Features: A sample for investigating the chemical composition of lunar olivine - Application: Comparative research of the Earth's mantle and the Moon's mantle - Quantity: Set of 4 Thank you for looking.