24pcs/set Geology Microscope Prepared Slides Mineral Thin Section Slides Please description reference pictures list. microscope slide 76 x 25x (1-1.2mm), cover glass slides thickness 0.17mm, rock and mineral material thickness 0.03mm. product size has positive or negative difference, please refer to the actual size of the actual object. Please pictures and list are only for information, please take the actual product as the standard. Fragile products, please handle gently.