By Ben Aris in Berlin As sanctions on Russian diamonds kick in, traders are fleeing their long time European base of Antwerp and setting up in Dubai to avoid what they say are “impossible” rules, The Times reported on March 26. A ban on dealing with Russian diamonds is being phased in that was included in the twelfth sanctions package last year. Under the new rules, any stone larger than one carat has to be sent for inspection to ensure it is not of Russian origin after March 1. However, traders have complained that it is “impossible to determine the origin of a stone” simply from its physical…