2.94 Square Cut Amethyst Chain Necklace in 14k.  This modern chain necklace features 2.94 carats of square cut amethysts and is finished in 14 karat yellow gold. The chain measures 17 inches in length with a very interesting variety of links and the square cut amethysts run along the chain. This could be a wonderful addition to a group of other chains or great way to hold the right pendant.