This gorgeous sterling and black enamel necklace is by Los Castillo. Each heart is 3/4" wide and 3/4" tall. The necklace is 15 1/2" end to end and closes with a hook. You can add a sterling extender to add additional length if needed. Weighs 1.4 ounces or 44 grams. Marked on the back of two hearts: Los Castillo, 15 eagle, 870 (I think) inventory number, Made in Mexico, esmelta fuego (for fired enamel). Excellent vintage condition. Rare. If sent overseas, it will be by Priority Express, and insured.