This set includes 1 necklace for each month of the year. All necklaces are 18 inches and have a unique birthstone. They come on crystal meaning cards with an original illustration by Amanda from Luna Pines. Necklaces are available individually, but I offer a discount when you order the full set. Birthstones included: January - Garnet February - amethyst March - Aquamarine April - Herkimer Diamond May - Emerald June - Moonstone July - ruby August - Peridot September - agate October - Pink tourmaline November - Citrine December - Turquouise