This Ring is made from the gemstone Apatite and glass beads. Rings are not elastic and do not stretch. It is recommended you go one half size larger than your standard ring size. The incredible blue, green, and teal color of this semi precious stone eminates a bold and classy look that really pops. It can be worn every day, perfect for a cocktail party, and a wonderful option for a bridesmaid to compliment the bridal jewelry and theme of a wedding.