Victorian enamel Love Knot 14k Old European Diamond Groom’s stick pin

Antique Victorian 14k gold stick pin featuring an ornate love knot with baby blue enamel inlay,  It has a 1.5mm old European cut diamond at its center. Wonderful for groom’s jewelry heirloom. Length of pin: 2.0". Head of pin: 7/16" diameter x 7/16" front to back; Weight: 1.2g, no mark tested for 14K