1999
| Inernos:
State University of Genua, Facolty of architecture.
|
1999
| Consolato Generale d’Italia a Lugano |
| 1999 | Longaretti-Poretti | Prisma Gallery, Wien |
| 2000 | Six+Six, dialog Switzerland-Luxembourg
Château de Bourglinster, Luxembourg |
| 2000 | Das Tessin stellt sich vor, Gipf-Oberfrick AG |
| 2001 | Art-Forum Montreux |
| 2001 | Seven+Seven, dialog Benelux - Switzerland,
Château de la Tour de Peilz |
| 2002 | Noodlebärg gallery Basel |
| 2002 | Espai vidre Fundacio centre del vidre de Barcelona |
| 2003 | INTEL Milan |
| 2003 | Blitzarte Montebello's castle, Bellinzona |
| 2004 | Meart, Mendrisio |
| 2004 | 3rd international art meeting Belgium/Luxembourg/Switzerland
Château de Burglinster, Luxembourg |
2005
| XV Rencontre des Arts Centre des Aînés Johannais, Montreal, Québec |
| 2006 | Sculprtures de Gianni Poretti Gallerie LE PORTAL , Petit-Champlain, Qubec |
| 2006 | Meart, Mendrisio |
| 2006 | Europ'Art, Genua |
| 2006 | 7 October, Opening Vitromusée, Romont
Exhibition contemporary Glass,"Orangerie" |
| 2007 | Glass Inspiration. Burgorf |
| 2007 | Meent Art, Hilversum NH |
| 2008 | Spazio Officina, comune di Chiasso
(Nuovi Soci Visarte) |
| 2009 | Arte Verrier Contomporain, Normont |
| 2010 | Il definitivo é trasformabile, Locarno |
| 2011 | Una primavera imprevista, Collective VIsarte
Casa Rusca, Cureglia |
| 2012 | Museo d'Arte Moderna Ascona -casa Serodine
Colletctive Visarte
|
| 2013 | Museo d'Arte Moderna Ascona -Casa Serodine
Collettiva Visarte |
| 2014 | ArtonPaper Manzoni-Poretti Paaradiso, coll, Visarte
|
| 2014 | Collettiva artisti Fond. Extrafid, Casa Landfogti, Rivera
|
| 2015 | Artisti in Galleria, Arte in Corso Galleria, Chiasso
|
| 2015 | Museo d'Arte Moderna Ascona -Casa Serodine
Collettiva Visarte |
| 2016 | Galerie Ambach, Erlinbach/SO |
| 2017 | Gianni und Mauro Poretti,Galerie Brigitta Leupin , Basel
|
| 2020 | Galerie Ambach, Erlinsbach/SO |