Giovanni in Fonte
| Name of structure: | Giovanni in Fonte |
| Extended name of structure: | Lateran Baptistery |
| Type of structure: | Baptistery |
| Country or main area: | Italy |
| Region within country or main area: | Lazio |
| City or area within region: | Rome |
| Date of structure: | 315, 5C, 7C |
| Century of structure 1: | 4 AD |
| Century of structure 2: | 7 AD |
| Specific place of mosaic: | Chapel of St Venantius; Chapel of St John the Evangelist; narthex apse. |
| Brief descriptive contents of mosaic: | Chapel of St Venantius: St John x 2, Christ bust, angels, Virgin, saints, 4 Rivers of Paradise, inscription. Chapel of St John: Lamb of God, 4 seasons, flora. Narthex: vine scrolls. |
| Date of mosaic: | 5C, 7C |
| Century of mosaic 1: | 5 AD |
| Century of mosaic 2: | 7 AD |
| Silver tessera at site: | Unknown |
| Gold tessera at site: | Yes |
| Colour tessera at site: | Yes |
| Were other materials found at site (i.e., glass cakes)? | No |
| Has analysis been done? | No |
| Samples taken from where? | n/a |
| Excavation and restoration campaigns: | 17C: mosaics lost in redecoration |
| Bibliography of mainly technical resources: | Mackie, G. V., Early Christian Chapels in the West: Decoration, Function and Patronage (Toronto: University of Toronto Press, 2003) |
| URLs: | |
| Comments: | Apse mosaic already lost by 6C (dedication recorded, Mackie (2003), 210). |