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This price is per carat so you will need to contact us before placing an order. For jewelry professionals this is a limited offer for calibrated heart shaped blue zircon. These gems are calibrated at 6 millimeters but but upon order you will be given the option of choosing slightly smaller than 6mm (5.85mm) or slightly over (6.30mm). The weight of each gemstone will then vary, between 1ct and 1.2ct for the smaller gems, between 1.3 to 1.4 for the larger ones. As we currently keep a stock of only around 40 carats, should you need larger quantities the waiting time for additional production will probably take several weeks. The color of these Zircon harts is graded C, or sky blue. Other smaller dimensions are also available, please check with us about the state of our inventory.