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Unheated Sapphire Pair 1.62 (PBR162)

untreated blue sapphires over in exactly matching pair ovals
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1.62 Carat (sold)
Deep Marine Blue
Medium Dark 70
Free of Inclusions



- Identification: Natural Unheated & Untreated Sapphire
- Carat: 1.62 (0.80 & 0.83)
- Shape: Oval
- Measures: 5.67x4.74x3.46 & 5.65x4.65x3.80 (millimeter)
- Color Grade: Very Good
- Tone: Medium Dark 70
- Color Zoning: None
- Clarity: Free of Inclusions
- Cutting Grade: Very Good
  - Brilliancy: 75%
  - Depth: 72/81%
- Origin: Tanzania

Treatment: None

Certificate No: AIGS 16092284/85

Overall Grade: Very Good+

Comment: 100% matching pair of unheated deep marine blue sapphires from Tanzania. Free of inclusions. No window. Double AIGS report. Pleochroism into green-blue is visible only from the side (see 'more images') and under the lens (also in reflection on glass below). Marine blue is a colder hue than cornflower, lacking purple, instead adding a green tint. Sidestones for a posh ring or as earrings. Unheated sapphires are double-dare hard to find matching if you understand 'matching' as we do: like in 'can't tell apart without carat balance'. Heat, on the other side, equalizes tone and hue, thus pairs are easy to produce after heat-treatment, even rows of identical gems for channel settings. Without treatment the big jewelry companies could not fill global stores with identical items. Hunting for unheated sidestones is amongst the most nerve-racking jobs I have; the possibilities for not-matching are infinite. Hence, we happily present such a good-luck catch and have zero scruple on pricing. Look around what is on offer as 'matching'. The handshot captures the tone best: Medium Dark 70 (zero is white, 100 is black).


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