1/2" x 3/8". Fabulous never-used oval glass locket inside (one here, one lost.) A travel talisman c. 1900. It's the kind of steamer trunk olde tymey type thing people would bring on a transatlantic steamship voyage. Associated with late 19th - early 20th c. luxury travel culture. c. 1900. Maybe upper-class railway cars with white tablecloths, that sort of thing. Adventure / honeymoon travel / modernity / mobility. 5/8" x 3/8" on two little chains. Testing 14k gold.