Diamond auctions used to be held using hand signals.JPDEX introduced information technology (IT) to such auctions, creating a fair and efficient "bid4diamonds," which eliminates people's self-serving traits, we introduced Internet-based "Internet Live Auction" service. Thus, JPDEX provides the largest, convenient diamond auction service in Japan, which can be accessed from anywhere in the country.

The Internet has made it possible for members to take part in auctions held at on-site auctions. Participants can check diamonds information displayed on their PCs or iphone before auctions and preview and check the diamond at JPDEX office
Members that have put their diamond up for auction can check the progress of bidding in real time.