An Art Deco diamond brooch, platinum set on an 18ct gold ground centring a millegrain set old European cut diamond of approx. 0.08ct between scroll pierced sides, one set with an old European cut diamond the other with an early single cut diamond to a surround of 18 mixed old European, early single and rose cut diamonds, the shoulders each set with 2 rose cut diamonds a square and pentagonal shape onyx, length 66 mm, wt. 5.41g, Netherland marks, boxed.