Assay Office
D&
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Deakin & Francis | 2019 | 18ct twentieth century Dress ring | High end manufacturer |
DD
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Downey Designs Ltd | 2019 | A platinum diamond set ring | Signet group use this company for their bespoke individual jewellery designs. Note: re strike on date letter. |
DK
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Gems TV (Gemporia) 2006 | 2018 | 9ct yellow gold dress ring | TV shopping channel |
DO
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Domino | 2018 | 18ct white gold dress ring | Casting House & EMA mark |