The selection of diamond journals in the DDH is based on the following Diamond Criteria:
- Persistent identification
- Scholarly journal
- Open Access with open licences
- No fees
- Open to all authors
- Community-owned
In order to be visible in the list of diamond journals on the DDH, a journal must fulfil diamond criteria 1-4 and at least one of criteria 5-6. If all of the diamond criteria are fulfilled, your journal will be shown as “fully diamond”. If fewer than five criteria in total are fulfilled, the journal can be added to the DDH, but won’t be considered diamond and won’t be visible to the users of the DDH.