They are pretty, and they did earn me some points with the girlfriend.  But note that like a lot of jewelry you buy online they appear larger than they actually are.  The diamonds in the "diamond leverback" can be found with the proper magnifying glass (sarcasm), but otherwise will not be noticed.  But really, you are buying these because the blues and purples of the mystic topaz go with a lot of different outfits, and will therefore probably be a commonly worn item.