A fourth conflict diamond rally was held recently in Boston as part of a campaign to pressure jewelers to support Rep. Tony Halls "Clean Diamond Act." The Campaign to Eliminate Conflict Diamonds—a group of 70 NGOs that organized the rally—is introducing a sticker for jewelers who support Hall's bill. It will urge members to shop only at "Jewelers for Clean Diamonds" who display the sticker. The jewelers' names will be listed on the Committee's Web site, www.endconflictdiamonds.org. In an e-mail, Jewelers of America urged jewelers not to support the bill, which it is not backing (see "Conflict Battle Brews in Congress" above). "You may … be asked to display a sticker or decal in your store or to list your store on a human rights group's Web site," the e-mail said. "We ask that you not take part in such activities at this time. While Congressman Hall and our industry agree that