Description
Spinel and diamond ring, circa 1925. Spinel is a superb and historically important gemstone, often found alongside its more famous rivals ruby and sapphire, and as a consequence, were often mistaken for them until the 18th century, when advances in mineralogy led to their recognition as distinct stones. This spinel owes its striking teal colour to traces of cobalt. While cobalt was commonly added to synthetic spinels in the early 20th century, natural cobalt spinels such as this are extremely rare, with more complex shades of blue, making them highly sought-after as a result. Set within a border of brilliant-cut diamonds, this mysterious blue stone makes an intriguing and interesting alternative to the classic sapphire and diamond cluster ring.
~Caring for Sapphire Jewellery ~
|
Place Of Origin
|
France
|
|
Stone Type
|
Spinel: Approx. 1 carat total
The spinel is natural, with no indications of heat treatment
Diamonds: Approx. 0.45 carats total
|
|
Stone Dimensions
|
Central spinel: 6.8mm x 6.2mm x 4mm
Height of setting: 8mm
Width of setting at front: 13.3mm x 14.5mm
|
|
Metal Type
|
18ct white gold
|
|
Marks
|
French mark of an eagle
|
|
Date Of Manufacture
|
1920 - 1930
|
|
Period Of Manufacture
|
Art Deco
|
|
Condition
|
Excellent
|
|
Signs Of Wear
|
Minor wear commensurate with age
|
|
Band Size
|
UK M / US 6.5 (complimentary re-size available)
|
|
Weight
|
4.70 grams (gross)
|
