GRADING REPORT COSA172

-          Identification: Blue Sapphire

-          Carat: 1.72

-          Shape: Oval

-          Measures: 6.12x7.83x3.81

-          Color Grade: Excellent

-          Tone: Medium Dark 70

-          Color Zoning: None

-          Clarity: Lightly Included (the trained eye might perceive a feather in the outer edge)

-          Cutting Grade: Good (flawless but slightly windowed)

o       Brilliancy: 50%

o       Depth: 62%

-          Origin: Koslanda, Sri Lanka

-          Treatment: None

Certificate No: 285824 (see more images)

Overall Grade: Very Good

Comment: Intense cornflower blue. Slightly windowed but yet sustaining the color throughout the center. Most sought-after hue in Ceylon sapphire. Best in a closed setting. Rare opportunity for untreated cornflower Ceylon below 1K/carat.

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