A German 18k yellow gold black enamel and carré-cut tourmaline ring.

A German 18k yellow gold black enamel and carré-cut tourmaline ring. The shoulders decorated with a finely chiselled interlaced motif, and the profiled quatrefoil bezel embellished with black enamel. Set with a square-cut tourmaline (approx. 3.26 ct, approx. 8.12 × 8.16 × 6.13 mm). Hallmarks: Fineness 750, "Jakob". Minor losses to the enamel, the cut edges of the tourmaline with some signs of wear. Bezel 13 × 13 mm. Ring size 55. Weight 16.18 g. Otto Jakob, Karlsruhe, 1990s.

Estimate:£4,029.6

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