The use of turquoise in jewelry dates back more than 7,000 years to ancient Europe. Later, it was sought by early American Indians as a good luck charm. Now, enjoy a good luck charm of your own with the classic style, sterling silver and authentic turquoise chips in these Hummingbird Dangle Earrings. Dimensions: 3/4L x 5/8. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Earrings.