Unique piece. In 18k gold. This ring is part of a group of five developed between 1987 and 1990. Three of these are part of the collection of the Museum of Modern Art in Arnhem (NL). Exhibitions: Galerie Slavik, Vienna 1996; Galerie Ademloos, Den Haag 1997; Studio Alberta Life, Padua 2005. Publications: The Compendium Finale of Contemporary Jewellery Makers, Cologne - Darling Publications, 2009, Vol.I, p. 510.Schmuckszene, catalogue n.39, Munich 1987, pag.17; Novidades de Holanda - News from the Netherlands, catalogue Lisbona 1990, pag. 34-35; Article in Art Aurea n.2/1990, pag. 82-84, Op het huid/ Gioielli della collezione permanente del Museo di Arte Moderna di Arnhem (NL), Catalogue Arnhem 2000, pag. 131-132; Zonder wrijving geen glans, pamphlet from the exhibition in the Utrecht Central Museum in 2002; Padova e il suo territorio, rivista n. 180, April 2016, pag. 35.