EFYTAL Initial Necklace with Birth Month Charm, Medium Sterling Silver 12.7 Mm disc, Personalized Gift TO CUSTOMIZE: click the yellow 'Customize Now' button on the right DIMENSIONS: Chain: 16" (40.6 cm) or 18" (45.6 cm) Pendant Diameter - 1/2'' (12.7 mm) ~ This is the perfect size charm, not too big, not too small. Great for all ages. MATERIALS: Sterling Silver chain and pendant. The finest materials to last a lifetime!. Choose your own Birth Month Charm.The chain is dainty but strong, and will not break. Efy Tal Jewelry (manufacturer) will always replace it for you if needed. GUARANTEE: Love this EFYTAL necklace or your money back! 5 year warranty on chain. GIFT WRAP: Necklace comes beautifully gift wrapped, ready for gift giving.