Assay Office
G
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Gemporia (www.gemporia.com) TV shopping channel | 2019 | 18ct yellow gold cast diamond ring |
GA
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Gallery & Abbeycrest Ltd. | 2019 | 18ct yellow and white gold five stone diamond ring (1.00ct TDW) |  |
CG
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Early Charles Green & Son mark | 2020 | 18ct yellow and white gold Emerald cut diamond cluster ring |
GT
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Gems T V (2005) | 2019 | 18ct yellow gold dress ring | T V and Internet shopping channel |