EFYTAL Tiny Lightning Bolt Necklace - Dainty Pendant on 14k Gold Filled Chain EFYTAL Dainty Lightning Bolt Necklace Materials: Pendant: plated. Chain: 14k Gold filled. The chain is dainty but strong, and will not break. Efy Tal Jewelry (manufacturer) will always replace it for you if needed. Length: 16" or 18" Specify length preference in 'Gift Message' Field. Must select this is a gift first Pendant Dimensions: about 5/8" (16mm)