Without a doubt, unique and one of a kind coral, pearl, amethyst, turquoise, and Abalone shell necklace. The materials are authentic gemstones and materials. The pictures show the "back" of the necklace showing the versatility as it is actually reversible. The necklace looks heavy but it actually weighs just under 1/2 a pound. The necklace is 19.5 inches, if you would like it longer I am able to add and extension chain. An easy hook and eye closure makes the necklace secure but also easy to get on and take off.