(IDEX Online) - The British jewelry retailer Beaverbrooks reported a 30 per cent surge in sales on the first day of post-lockdown trade.Customers flocked to the family firm's 59 newly-opened high street stores in a retail frenzy after three months of restrictions were lifted on 15 June.The average spend on watches and jewelry items was up by almost a quarter (23 per cent) year-on-year.And total spend on day one was up almost a third year-on-year."The first week of trading has been incredibly positive, and we're feeling cautiously optimistic that consumer confidence is starting to return," said Anna Blackburn, the company's managing director.