RAPAPORT... Alrosa will offer more than 200 polished coloreddiamonds at the Hong Kong Jewellery & Gem Fair in September. The True Colors auction will feature a pear-cut, 18.07-carat, intense-yellow diamond which is internally flawless, the Russia-based miner saidFriday. An emerald-cut, 6.78-carat, vivid-yellow diamond, and two pear-cut,vivid-purplish-pink stones are also expected to go under the hammer. The pairincludes a 0.54-carat diamond with VVS1-clarity and a 0.55 carat, internallyflawless stone. Customers will be able to view the stones between September 16 and 20, with thefinal auction taking place September 23. Alrosa cut and polished all the stones at its in-housecutting unit. The miner will also offer digital passports with each stone,containing the date and location it was mined, its characteristics, and informationon each diamond's cutter and their professional experience. The company held its first True Colors auction at lastyear's show, selling 210 of the 250 colored diamonds on offer for $9 million. Image: One of the colored diamonds that will feature in the True Colors auction. (Alrosa)