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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.
A 5 carat diamond weighs 1.0 gram and a Round Brilliant Cut has a diameter of 11.0mm. Diamond Pricing: the prices per carat for 5 carat stones range from $9,350 to $147,400 PER CARAT. From 5 carats and up, diamonds are large enough to be cut into Heart Shape diamonds.