GRADING REPORT OCS054
- Identification: Natural Unheated & Untreated Color Change Sapphire
- Carat: 0.54
- Shape: Oval
- Measures: 5.22x4.07x3.18 (millimeter)
- Color Grade: Very Good
- Tone: M50
- Color Zoning: None
- Clarity: Free of Inclusions
- Cutting Grade: Excellent (precision cut in the US of A)
o Brilliancy: 90%
o Depth: 78%
- Origin: Montana, USA
- Treatment: None
Certificate No: IGI 219624171
Overall Grade: Very Good or Excellent (see P.S.)
Comment: Montana sapphire in the classic icy green-blue but with a warming color change to purple. Not a dramatic change at all, and I would have expected IGI to ID it as color shifter or multicolor for I failed to separate the colors on photo without resorting to illegal (in our moral code) light tricks. However, if you study the main image closely (taken in mixed daylight) you will notice the purple undertone, leaving a milder, warmer character than most of our our ice-montanas. Free of inclusions, perfect precision cut, no window, glittering luster, certified unheated, with 5x4 ready to adore a lady's ring without breaking the bank.
P.S. Somebody asked on the phone why this did not get an 'excellent'. I didn't know the answer right away, but now figured that as an ice blue Montana sapphire it can get an 'excellent', but as a color changer it has a flaw because the CC is not strong. Hence we end up with 'very good' only, meaning all perfect but one flaw. As a purplish blue Montana it is perfect.
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