| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | brilianto | briliantoj |
| Accusative | brilianton | briliantojn |
| Catalan | brillant |
|---|---|
| Czech | briliant |
| Danish | brilliant |
| Dutch | briljant |
| English | brilliant |
| German | Brillant |
| Hungarian | brilliáns |
| Portuguese | brilhante |
| Russian | бриллиант; брильянт; брилиант |
| Spanish | brillante |