JP on a ring is a hallmark and this stamp is used by a famous jewellery enterprise named Jack Pilatowicz. Jack Established his corporation in 2007 in Brisbane, Australia, just after twenty years of experience inside the jewelry manufacturing field. HK is usually a trademark that stands for Harriet Kelsall. https://slotgacor06296.bloggosite.com/44065158/the-ultimate-guide-to-jp88