Gemstone Comments: I don't remember seeing an blue zircon emerald cut larger than 25 carats before I came across this beauty. A beautiful gemstone, blue zircon is making a comeback due to its color, clarity and sizes. It really makes beautiful jewelry. The color of this gem is simply perfect. A rich, deep water blue with hints of green. The culet is a bit off center, but the overall brilliance of the gemstone is exceptional because of the sharp radiant facet pattern on the pavillion. This size and shape are extremely rare in the gem trade.