EFYTAL Calla Lily Flower, Personalized Initial Necklace with Choice of Birth Month Charm TO CUSTOMIZE: click on the yellow 'customize now' button on the right Chain: 16" (40.6 cm) or 18" (45.6 cm). The chain is dainty but strong, and will not break. Efy Tal Jewelry (manufacturer) will always replace it for you if needed. Dimensions: Pendant - 5/8" x 1/2'' (1.7cm x 1.2cm) Materials: Chain: Sterling Silver | pendant: silvertone. EFYTAL stands by the quality of our metals. Choose your own Birth Month Charm