These little gems are great for jazzing up your nails and are fun to use in nail art. They are very small with most at around 2mm (though a few of the circle shapes are bigger, at 3mm approx). The shapes you get are: stars, moons, butterflies, hearts, circles (mixed size), rounded diamonds, regular diamonds, triangles, squares, flowers, bow-ties, and circles (small one size). I would attach them to my nail with nail polish, cover with 1 layer of clear varnish, and they would be very hard to remove once set. If you are looking for a wide range of shapes, then I would recommend this product.