19th Century Citrine and Diamond Anchor and Arrow Brooch19th Century Citrine and Diamond Anchor and Arrow Brooch England, circa 1870. A central citrine cluster brooch in an anchor and double arrow motif. The brooch features an approximately 22 carats oval Medeira citrine. The diamond anchor and arrow feature approximately 4 carats of old mine cut diamonds, I J color. The brooch measures 2. 50 inches by 2 inches.