British jewellery retailer Signet Group, owner of the H Samuel and Ernest chains, revealed Thursday that group like-for-like sales climbed 6.5 per cent in the eight weeks to December 24, compared to slight fall in the third quarter. It added that UK same store sales rose by 9.7 per cent over the same period, compared with growth of 7.2 per cent in the third quarter. Comparable sales in the US rose 5.3 per cent, compared to a decline of 4.4 per cent in the third quarter.