Antique Art Deco, French, 18ct White Gold, Cobalt Spinel and Diamond Ring

    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)

    Antique Art Deco, French, 18ct White Gold, Cobalt Spinel and Diamond Ring

      Product form

      SKU: ARB-270

      £3,000

      • ✔ Certificate of Authenticity
      • ✔ Document for Insurance Purposes
      • 350+ rings sold, trading since 2019
      • We hold viewing appointments at Pavilion, 64 Knightsbridge, London SW1X 7JF.

      • WhatsApp Sam on : 07426732855

      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)

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