An awesome vintage star sapphire ring. The grey-ish blue cabochon sapphire in the centre - certified as natural, unheated and from Ceylon (Sri Lanka) - displays a strong and clear asterism in daylight. The stone is rubover set in yellow gold and flanked by a pair of high white and internally clean old mine cut diamonds, also in rubover settings, leading to slim and tapering yellow gold shank.
Accompanied by a report from Gemmological Certification Services (GCS) stating the sapphire shows no indication of heating, and is Sri Lankan (Ceylon) in origin.
Cut:? Oval cabochon sapphire and old mine cut diamonds.
Colour:? The diamonds are VS1 to VS2.
Clarity:? The diamonds are G to H.
Carat:? The sapphire is 6.35 carat. The diamonds are approximately 0.15 carat each.
Circa:? 1920.
Size:? N (UK) or 6.5 (US). Free sizing available.
Measurements:? The sapphire is 10.37 x 8.65mm. From the outer edge of one diamond to the other is 16.9mm. The ring is 11.3mm at the wide
...st point and sits 7.00mm from the finger.
Weight:? 4.17 grams.
Metal:? 18k yellow gold. Tested with a Niton DXL Precious Metal Analyzer.
Item # 4121112S039
Internal Reference: 4121112S039
Antique ID Number (AIDN): SA1103995
Dateline of this antique is 1920
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