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by Will Purcell

The diamond and specialty minerals stocks box score on Friday was a bleak 64-105-141 as the TSX Venture Exchange lost four points to 556. Last week's shocking, but not entirely surprising, downward readjustment of Paul Zimnisky's global rough diamond price index turned out to be a bit pessimistic -- at least for a day or two. The New York-based Mr. Zimnisky always readjusts the past several weeks of his chart when late-to-arrive data come in, and this week that tardy information prompted him to boost last week's fix to 149.6 points, up from 148.8 points where he had it pegged a week earlier.

Unfortunately, that was the limit of the good news. This week, Mr. Zimnisky has calculated that rough diamond prices continued to fall significantly, prompting him to pare a full point from this week's value. And so, the index now sits at 148.6 points, down 0.6 per cent from last week and, in fact, down 0.1 per cent from where we were first told it was at a week ago.

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