An 18k bi-colour gold and ruby kinetic ring - image-1
An 18k bi-colour gold and ruby kinetic ring - image-2
An 18k bi-colour gold and ruby kinetic ring - image-3
An 18k bi-colour gold and ruby kinetic ring - image-1An 18k bi-colour gold and ruby kinetic ring - image-2An 18k bi-colour gold and ruby kinetic ring - image-3

Lot 144 Dα

An 18k bi-colour gold and ruby kinetic ring

Auction 1183 - overview Cologne
18.11.2021, 15:00 - Jewellery
Estimate: 6.000 € - 8.000 €
Result: 15.000 € (incl. premium)
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An 18k bi-colour gold and ruby kinetic ring

Solid square shank with pierced cross design. The disc shaped bezel set with one fixed and one mobile white gold rod set with natural rubies, the latter twisting around the fixed rod via a concealed ball bearing mechanism with the wearer's movements. Hallmarks: Fineness 750, maker's mark "B" in a circle. Bezel diameter 30.1 cm. Ring size 61. Weight 39.6 g.
Friedrich Becker, Duesseldorf, 1980s.

Literature

For this type of ring see Becker (ed.), Friedrich Becker - Schmuck, Kinetik, Objekte, Stuttgart 1997, p. 146; for his finger rings see p. 152 ff.