This pair of unique 1960s cased silver-gilt surprise eggs by the late Australian metalworker Stuart Devlin (1931-2018) will go under the hammer in a sale of silver and jewellery at 1818 Auctioneers on April 1 in Milnthorpe, Cumbria.
The eggs – one containing a cushion cut kunzite and the other a trio of amethyst crystals – come in cases retailed by Collingwood of Conduit Street, London, and Cartier. They are estimated together at £3000-4000. The lot also contains a personal letter from Devlin to the vendor confirming the eggs’ unique designs along with signed photographs, an original receipt and a 1960s valuation certificate.