These silver and crystal earrings and indeed stunning; but they have a huge problem: they won't stay on.  I wore these earrings for less than an hour and lost one because the locking system is inadequate.  The earrings aren't heavy, but they are too heavy to depend on the stability of the fastener.  There's simply no way to keep these earrings on.

Beautiful earrings : bad design.  And, these are "crystal," not tanzanite stones.  They are gorgeous, but only look like gemstones.  For the price - you can't beat it - but the clasp system simply doesn't work properly.