528 by CfH (Crystals for Humanity) Gliding Black Jasper Crystal Double Point Necklace 18K Yellow Gold Vermeil 

Brand new in packaging.  Retails at $320+

Chain length 40 inches with gliding crystal to adjust and wear at desired length.

18k Yellow Gold Vermeil
(pronounced ver-mey)

This special silver plating process must use a minimum of 2.5 microns of gold to be considered vermeil. Most gold plated jewelry is just 0.5 microns, but CfH uses 3 microns for its durability and rich yellow appearance.