BOULDER, Colo. – Throughout the year, Artemis Gallery presents both specialty and comprehensive one-day auctions that attract a global audience of antiquities and ethnographic art collectors, and institutional buyers. But the excitement level leading up to an Artemis Gallery sale is never greater than when the Colorado-based company hosts its two-day Exceptional Auction, whose format features antiquities and fine Asian art in the opening session and ethnographic art and fossils on Day 2. The next highly anticipated event of this type is slated for June 20-21, with absentee and Internet live bidding available through LiveAuctioneers.