Measuring app. 1 1/4 x 7/8 inch, with a checkerboard pattern of pearls (measuring app. 3.5mm) alternating with robin's egg blue enamel. The engraved bail set with a pearl measuring app. 2.5mm, fashioned in 18k gold. On a period chain fashioned in 9k gold. Circa 1890. Length 20 inches.