Four gem-set stick pins; A heart-shaped stick pin with foliate details and pearl highlight, French eagle

head hallmark (indicates 18ct); A pearl and old-cut diamond stick pin with millgrain and wirework details, hallmark unreadable; An aventurine quartz stick pin with rose-cut diamond rondelle, unmarked; An acorn stick pin with rose-cut diamonds and a green hardstone, unmarked. Total weight of items 6.4 grams (4).