Swarovski Cubic Zirconia studs in White Gold.  I have a great deal of jewelry, most of which the real thing.  But these earrings are realistic.  You would have a very hard time telling the difference between these stones and real diamonds.  I actually think these have more sparkle than most diamonds.  I have since bought some for my Mother, Mother in law, and Sisters.  Great price as well.  Can't be beat!