JP on a hoop is an indicator and this stamp is utilized by a famed jewellery corporation named Jack Pilatowicz. Jack Established his company in 2007 in Brisbane, Australia, following 20 years of expertise during the jewelry production sector. Hence, if a hoop has N 925 Cn stamped on it, https://donovanskylw.bloguerosa.com/35749376/the-best-side-of-jp88