Firstly these acrylic diamonds arrived in a plastic bag safely packaged in an outer box. I was surprised when I felt the weight of the bag. They have many uses like sprinkling around a table, or in arts and crafts projects, I have added a few inside a balloon along with some feathers, they look very pretty. They are approx about 1 cm in size and the amount you receive can go a long way. Tip, put some inside a boxed photo frame along with some battery led lights, really pretty and girly. They are big enough to hold with your finger tips or tweezers.