Assay Office
H&
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Harvey & Thompson 1954 to date | 2018 | 18ct diamond set dress ring | Pawnbrokers |
HG
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Henry Griffiths & Son | 1979 | Lady’s 9ct yellow gold signet ring |
HL
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Hirsch Ltd (2014) | 2020 | A platinum and diamond set sweep design wedding ring | |
 | Hirsch Ltd (2010) | 2020 | All platinum sapphire and diamond set cluster ring |
HO
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Hearts of London 2010 to date | 2018 | platinum bespoke diamond ring |