Several alexandrites have also appeared at Bonhams auctions held at auction centers around the world, such as Los Angeles, London, Hong Kong etc. A 29.97-carat, cushion modified brilliant-cut alexandrite, with a pronounced color change from yellowish-green in natural daylight to brownish-yellow in incandescent light appeared at Bonhams Los Angeles auctions on May 20, 2014. The gemstone was mounted as the centerpiece of a platinum ring with a baguette-cut diamond on each shoulder and sold for US$ 137,000. This works out to a PPC value of US$ 4,571.
Another alexandrite and diamond ring assigned Lot 863, appeared at Bonhams Hong Kong Fine Jewelry & Jadeite Sale held on May 30, 2008 and was sold for HK$ 912,000 (USD 117,640). The 7.65-carat, cushion-cut alexandrite was mounted on a platinum ring and was surrounded by a row of smaller, oval mixed-cut alexandrites, with small brilliant-cut diamonds set on the shoulders of the ring. The Lot was accompanied by a GGL report that certified the natural, untreated status of the stone and the country-of-origin as Brazil, with a pronounced color change from bluish-green in natural daylight to purple in incandescent light. The PPC value of this stone is US$ 15,378.
Another Brazilian alexandrite with a pear-shaped cut, weighing 3.46 carats mounted on a platinum ring, and flanked on either side by brilliant and pear-shaped diamonds, featured at Bonhams Hong Kong Fine Jewelry & Jadeite Sale on November 27, 2007. The lot was accompanied by a GGL report that certified the natural origin of the stone from Brazil, with a pronounced color change from bluish-green in natural daylight to purple in incandescent light. The Lot was sold for HK$ 768,000 equivalent to USD 100,000 approximately. The PPC value of the stone works out to US$ 28,902.