JP on a hoop is a trademark and this stamp is used by a famous jewellery corporation named Jack Pilatowicz. Jack Launched his organization in 2007 in Brisbane, Australia, following twenty years of experience within the jewellery production business. Hence, if a ring has N 925 Cn stamped on it, https://casper77daftarsitusjudion47912.bloggosite.com/44086482/the-5-second-trick-for-jp88