Natural Amethyst Crystal necklace that comes with an 18 inch chain with a lobster clasp (with extender). The silver plated moon pendant is about 1 1/2 inches. I did purchase these wholesale but they were sent in individual bags without a tag attached. Amethyst is a meditative and calming stone. It benefits us emotionally, spiritually, and physically to provide balance, patience, and peace. Amethyst has a gently sedative energy that promotes peacefulness, happiness, contentment and protection.