There are 4 stones available In this listing. Each is a standard 4mm cut. The nice bluish violet color is similar to the gems sapphire and tanzanite which are pleochroic. Which means they change colors when looking at the different axis. The 4 stones are the first 4 photos. The last 4 photos are the same stones, different photo, same order. If you would like a specific stone, please ask for 1, 2, 3 or 4.