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Prices Many dealers say jadeite is less expensive in the United States than in the Orient. Like most gemstones, the larger the piece of jade, the more valuable the piece. Burma jadeite is bought and sold on individual pieces according to MM sizes. The most common sizes are 8mm x 10mm, 10mm x 14mm, and 13mm x 18mm. The 8 x 10's are usually 2-3 carats. The top material around 8 x 10mm in size can wholesale for $2000-$3000 per carat.
They also sold a brooch with a 3.45 triangular, flawless, deep blue diamond with 6.50 carats of white diamonds for about $750,000. Sotheby's Sotheby's sold a 3.03 marquise, vivid blue, IF, diamond for over $257,000 per carat and a 2.03, heart shaped, intense orangy pink for $73,000 per carat. Also, a 1.27, rectangular, reddish brown sold for $20,155 per carat. A 6.94 Kashmir sapphire sold for $25,000 per carat. Christie's Christie's sold a 5.01 Burma ruby for $35,000 per carat and a 26.39 cabochon Burma ruby sold for slightly over $26,000 per carat. A 10.28 Kashmir sapphire sold for almost $26,000 per carat.