(IDEX Online) - De Beers has introduced a new online "sealed bid" tender for some of its rough diamonds.The Offer, which went live last week, allows buyers to key in the price they're prepared to pay for a lot, unseen by other bidders.It is an additional sales channel rather than a replacement for the online auctions that have been taking place since 2008.Online auctions have accounted for the 10 per cent of De Beers production that is not sold at Sights."We are constantly looking at new ways for customers to source natural diamond supply with a view to make the experience as simple and flexible as possible while keeping commerciality in mind," said Rhyzard Bilimoria, account director in De Beers Group Diamond Trading. "We believe that for certain product ranges and during certain industry conditions, the Offer represents the most effective channel to meet customer and industry needs."He said the Offer was quick, simple, confidential and allowed buyers to bid any amount."We recognise that in periods when trading conditions are evolving, different customers can perceive different value depending on their specific activities - it is therefore beneficial to implement a sales process where there is no visibility of other bidders' activity, as this supports customers' ability to make independent assessments of value that reflect their own underlying demand."De Beers cancelled its online auctions in the last two sales cycles of 2023 amid slow demand.Generic rough diamond picture