In the U.S. the consumer price index (CPI) for jewellery increased 2.2 percent to 160.9 points in April this year, as reported by the Bureau of Labor Statistics (BLS). This indicates a slight improvement over the March 2010 index reading and also the 27th consecutive cycle in which the reading CPI for jewellery crossed 150 points, reports say. Also, reports add that the index is based on reference point of average prices in 1986, which is set at 100 points. The CPI for all product categories increased 2.2 percent to 217.6 points, in April this year, reports add.