I've purchased several hundred cubic zirconia earrings, necklaces, etc etc etc.  BUT!!!  I'm am awestruck ... absolutely speechless with these!!!  They're simply AMAZING ... BEAUTIFUL ... AND AS CLOSE TO THE REAL THING IF NOT BETTER!!!  I own real diamonds as well as some of the best Moissanite jewelry.  That's all I can compare these earrings to besides a very good pair of real diamonds!!!  Great job Amazon ... this is a collection to be proud of.  The earrings have a great tight-fitting back, unbelieveable sparkle, great workmanship & overall the best Cubic Zirconia earrings I have ever purchased!!!!!!