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