IDEX Online Research: Diamond Prices Heading Up in Past Week

After months of struggling to hold their prices, polished diamond prices are heading upwards as demand from consumers finally starts to trickle up the pipeline.

One-carat Princess cuts, which were one of the few items to have seen growing demand of late, continued to strengthen in the past week, adding another 0.2 percent to their price tag.

Toping the list of price increases are 1.50-carat (1.50-1.99) rounds, which increased 3.4 percent in the past week. The 0.90-carat size range made a similar rise, increasing 3.3 percent.

Considering the trends to-date in December, price increases are continuing. Compared to November's average, the IDEX Online Polished Price Index is up 2.0 percent today (Thursday, December 13).

On this basis, round 1 carats are up 2.5 percent, 1.50 carats +3.8 percent and 1 carat Princess cuts +0.5 percent.