With new digital ‘passports’ that disclose where its merchandise have been crafted, Monica Vinader is forward of the pack in a jewellery sector under pressure to prove its gems aren’t linked to human rights abuses and environmental degradation. But the spike in counterfeit sales may also have something to do with how manufacturers themselves are pricing and advertising their merchandise. Global brands should navigate a jewellery market dominated by local giants with nationwide store networks trying to increase overseas and purchase domestic rivals. ALROSA, the world’s largest diamond mining firm, presents fans to choose a “soccer” name for giant tough…