NEW YORK–(BUSINESS WIRE)–Diamond prices softened slightly in October amid slow trading as businesses closed for Indian and Jewish holidays. Polished inventory levels dropped during the month, but remain higher than usual for this time of year, exerting downward pressure on prices. The RapNet Diamond Index (RAPI™) for 1-carat diamonds slid 0.2% in October and has declined 4.7% since January. RapNet Diamond Index (RAPI™) October YTD Y2Y Oct. 1, 2017 – Nov. 1, 2017