These glass rinestone rivets are clear, 8mm in diameter with a shank depth of just over 1/8" or 4mm. They have rounded backs. You get 6 for the price shown.
Setting tools aren't included, but you can set with standard tools. Instead of using an anvil, pad around the gem, face down on your workspace. with the rounded back facing upwards, tap once firmly using a rounded setting tool and mallet.