I love the say it in crystals collection by prima -- I have an embarassingly large collection of their crystals and pearls! I love the black ones especially because they work on so many layouts. Be careful when you are buying to differerntiate between black (which is a true black jewel) and black diamond (a dusty grey jewel).
I love the design of this crystal because you have the option of using it whole for a dramatic effect; or you can cut it up, using each beautiful swirl on a number of projects. Love Prima!