Amethyst is the birthstone of February and is great at replacing negative energy where there is some. I am unsure of what the other stone is (posssssibly Serpentine?). Stones are all hand carved by me, and held together with the Tiffany Technique which I have learned from a stained glass class, but using a lead free solder with a percentage of silver in it. The necklace comes with the chain type shown and I threw a few common choices at the checkout. Item shown in the picture is the item you will receive.