Description
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Diamond and sapphire ring. The centre of this glamorous ring is collet-set with a square cushion diamond weighing approximately 1.20 carats, within a border of radiating calibré-cut sapphires, to an outer floral border of circular-cut diamonds. The sapphires in this deceptively simple ring have been specially cut for the setting (calibré-cut), so that they tessellate together to form a radiating oval shape, an extremely labour intensive and time-consuming technique which emerged as stone cutting techniques became increasingly advanced in the early 20th century in order to meet the demands of the abstract geometric designs of the Art Deco period. The result of all this meticulous cutting and setting is a seamless blue surface, allowing light to run along the facets, moving across one stone to the other without any hint of a metal setting, and offering the perfect backdrop to the white diamonds at the centre and borders.
PLACE OF ORIGIN
Possibly France
DATE OF MANUFACTURE
20th Century
METAL
Platinum and 18 carat white gold
STONE
Sapphires: not possible to gauge due to the limitations of the setting.
Diamonds: central diamond approximately 6.5 x 6 x 4.4mm, approximately 1.20 carats (calculated), remaining diamonds approximately 1.08 carats total.
CONDITION
Very good
WEAR
Very minor wear to mount commensurate with age.
RING SIZE
UK: N / US: 6 3/4
MEASUREMENTS
Height of setting: 5mm
Dimensions of setting at front: 18mm x 15mm
WEIGHT
Gross weight 6.75 grams
