c. Early 1900s Engagement Ring with an Old Mine Cut Diamond Center and an Ornate Hand-Pierced Gallery

Period. c. 1910s - 1920s; though crafted in the pre/early Art Deco era, the ring—with its organic lines, stellar craftsmanship, and ornate open metalwork—is distinctly late-Edwardian in style

Marks: the piece is stamped “PLAT”, “MM.”, and with a symbol that looks like an inverted peace sign

Materials: platinum; diamond

Dimensions: the ring measures approx. 6.8 mm wide across the top north to south; the ring stands 5.7 mm tall above the finger

Size: just over 4 3/4 (free sizing where sizing is possible)

Diamond: GIA-assessed .77 carat Old Mine Cut diamond with I color and VS1 clarity