GRADING REPORT BGZ372
- Identification: Natural Unheated & Untreated Zircon
- Carat: 3.72
- Shape: Oval Brilliant
- Measures: 7.26x9.21x5.78mm
- Color Grade: Mixed
- Tone: Light 5 to Medium Dark 60 (see comment)
- Color Zoning: Visible
- Clarity: Free of Inclusions
- Cutting Grade: Excellent (precision cut)
o Brilliancy: 95%
o Depth: 63%
- Origin: Cambodia
- Treatment: None (see comment)
Certificate No: IGI 389902005
Overall Grade: Excellent+
Comment: This one-time-only surprise came to Thailand and us from Cambodia. It was difficult not to get lost in a more than a dozen photos, each adding another aspect of the slightest change in angle or light-setting flipping the whole gem, or parts thereof, between teal-blue, turquoise and bluish-green, seafoam and light blue; all regularly overwhelmed by the zircon-only luster, beating any diamonds' dispersion and color-saturation 24/7. Back- and side-views, close-ups and even the hand-shots add unique beauty. Cambodia's blue zircons are perhaps most beautiful gems in the world... unfortunately only after several heat-treatments, with color-stability and brittleness a yet unsafe topic. Praising treated gems is nothing we do lightly but we always wished to show these beauties online, though 99.X% come from yellow-green to muddy-brown rough. Ever since I almost suffocated on Thai sticky-rice when paralyzed by my first, well-cut blue Cambodian zircon, we have a, now decade-long, standing order for any rare occasion in which a rough needed no heating but was blessed with natural color during its geological process, leaving some green and yellow alive with colorless zones breaking up the otherwise equally saturated but treated blue versions. Around 2012, we found a parcel of smaller light blue zircons from an Australian goldmine, now almost sold out, also with green, white and yellow zones. Yet, this solitary 3.72 carat miracle appears to have come from a different planet (which, in the case of zircon would theoretically be possible). The cut is gorgeously perfect and precise, its crystal is clean under the lens and even a tilt-window is hard to provoke with the white zones blowing up the in-betweens with glitter, while rainbow-colored sparks honor zircon's best-of-world optical features.
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