Brooch/pendant. Master Goldsmith Workshop Peter (1932-2015) & Marianne Heyden (born 1936), Cologne. In the shape of an elongated hexagon in stepped structure, set with a tourmaline, framed by triangular solderings alternating with triangular faceted diamonds in bezel setting. 18 ct yellow and white gold, approx. 24 g, with master mark "PHM" on the back side, h=3.3 cm, w=4.6 cm.
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