This square Druzy Agate necklace is so cute.  So easy to wear as a choker or as a necklace that drops to the collar bone.  
White Druzy Agate goes with everything and is set in Sterling Silver.  This necklace is 19 1/2 inches long.
Agate enables the wearer to choose between true friends and false ones.  It is said to also avert storms and lightning and protect children from danger.