Our latest obsession? Anything with our birthstone. October babies will love this octagonal-cut Opal pendant necklace. Add to your favourite chain - or gift to someone special - for a super personal touch. 18k Gold Plated, Stainless Steel 6x4mm Octagonal cut Opal Opal for creativity, inspiration and emotional healing Chain length 16" (40.5cm), extends to 18" (45.5cm)