If a hoop has P4SR prepared on it, it means that it's been produced from a combination of white gold and platinum. SETA is a firm which offers style jewellery. Their jewellery typically incorporates a CZ plating over silver. M on a ring denotes Milor, that is an Italian silver https://casper77daftarsitusjudisl25689.fitnell.com/77677056/the-smart-trick-of-jp88-that-nobody-is-discussing