A vintage Art Deco ring set to centre with a round cabochon un-enhanced star sapphire in an open-back claw setting with an approximate weight of 11.79 carats, flanked with an assortment of baguette and round-cut diamonds that are set in a satisfying geometric arrangement and amount to a combined weight of 0.85 carats. This ring tests as platinum and is circa 1920.

History

• Place Of Origin: Germany.
• Date Period: Circa 1920.

The stones

• Star-sapphire: the rarest and most valuable stone of its type, the star-like optical phenomenon is called an asterism, and is caused by needle-like inclusions orientated at specific angles reflecting light.
• Sapphire weight: 11.79ct .
• Sapphire size: Length 13mm; Width 12mm; Depth 7mm
• Treatment: Unheated/untreated (assessed by our GIA qualified gemologist).
• Total diamond weight: 0.85ct .

Band

• Metal Composition: platinum.
• Band Size: UK M 1/2 / US 6.5.
• Resizing: Single complimentary re-size available. This ring can easily be re-sized up or down to any size.

The ring overall

• Front Head Dimensions: Length 13mm; Width 20mm; Height of setting 6.7mm
• General Wear: Excellent; wear commensurate with age.
• Condition: All stones secure, safely set with platinum fully covering each stone, no damage to the setting. Minor scratches due to age. There are no major marks or scratches that we feel necessary to mention. All of our jewellery is professionally cleaned prior to us listing it.

Unless stated otherwise, gem weights and specifications are estimated (assessed in mount).