Meanwhile, same-store sales for gold plunged 29 percent on the year, and sales of gem-set jewelry dropped by 10 percent.
The two shows attracted a record-breaking number of exhibitors in 2014, hosting more than 3,850 exhibitors from 53 countries and regions, and welcoming over 74,000 visitors from 145 countries and regions.
Pure Gold Jewellers, a leading international retail jewelry chain headquartered in the United Arab Emirates, has become the first jewelry retailer to adopt and introduce the World Diamond Mark's Authorised Diamond Dealer® (ADD) program.
Industry trade association, The Plumb Club, has announced its first associate member.
"We are pleased to accept MVI Marketing Ltd. as our first associate member," said Lawrence Hess, The Plumb Club's executive director.
"MVI 's nearly 30 years of experience in jewelry consumer market research will be a good fit with The Plumb Club' s best in class mission."
Consumers in the United States spent $9.1 billion on shopping expeditions on Black Friday, according to data research firm ShopperTrak. That was a decline of 7 percent compared with the same day last year, the company said.
On a bright note, however, Thanksgiving sales soared 24 percent on a year earlier to $3.2 billion, and sales for the two days combined were just 0.5 percent lower on 2013 to $12.3 billion.
Video camera evidence from the store shows the man talking in a friendly way with the workers while other customers were being dealt with at the Diamonds by Siag store in Manhattan’s diamond district.
A man distracted workers in a Manhattan jewelry store and walked out with $80,000 of diamond earrings.
The new year will see the launch by Fiera di Vicenza of VICENZAORO The Boutique Show, a revolutionary exhibition format developed by the company for the gold and jewelry industries that assembles exhibitors into homogeneous communities, classified by reference values, type of production and purchasing procedures.
Chinese jewelry manufacturing and retailing giant Chow Tai Fook posted a 10 percent decline on the year for its third fiscal quarter which ended on December 31.
The firm said that there was an 18-percent slump in same-store sales - which included a 21-percent drop in sales in Hong Kong and Macau and a 15 percent fall in Mainland China.
India's Gem & Jewellery Export Promotion Council (GJEPC) has submitted proposals to the Ministry of Commerce & Industry with one-year and three-year action plans for the expansion of the gem and jewelry trade.