These are very petite lever back sterling silver earrings with tanzanite and diamond chips.  I wear my hair short and I am a petite lady, so these are just perfect.  I love the color of Tanzanite.  It is not only a beautiful naturally occurring gemstone.  It is becoming harder to find and more expensive as they are digging in the last naturally occurring tanzanite mine.  Once it is gone the natural new stones will be gone also.  They are making tanzanite in CZ, but it does not have the beautiful color as the natural stone.  The tanzanite is not huge in these earrings, but I have a ring that is also heart shaped and the stones match perfectly.  I would highly recommend these to anyone who likes petite earrings and lever backs.  Beautiful earrings, and great price.