Ribbon: Blue with orange edges.
Instituted: 8 May 1858 by Duke Adolph of Nassau, abolished when Nassau was subsumed into the German Empire in 1866 and it was reinstated as a Grand Ducal order in 1890.
Awarded: For exceptional services to Luxembourg or the Ducal House, or excellence in the arts and sciences.
Grades: 8 (Grand Cross, Grand Officer, Commander with Crown, Commander, Officer with Crown, Officer, Knight with Crown and Knight), plus Gold and Silver Crosses and Gold, Silver and Bronze Medals.
| Grand Cross: Badge |
 |
Sorry - no picture of reverse |
| Grand Cross: Star |
 |
Sorry - no picture of reverse |
| Grand Officer: Badge |
 |
Sorry - no picture of reverse |
| Grand Officer: Star |
 |
Sorry - no picture of reverse |
| Commander with Crown |
 |
Sorry - no picture of reverse |
| Commander |
Sorry - no picture of obverse |
Sorry - no picture of reverse |
| Cross of Honour for Ladies |
Sorry - no picture of obverse |
Sorry - no picture of reverse |
| Officer with Crown |
 |
Sorry - no picture of reverse |
| Officer |
 |
Sorry - no picture of reverse |
| Knight with Crown |
Sorry - no picture of obverse |
Sorry - no picture of reverse |
| Knight |
 |
 |
| Gold Cross |
Sorry - no picture of obverse |
Sorry - no picture of reverse |
| Silver Cross |
Sorry - no picture of obverse |
Sorry - no picture of reverse |
| Gold Medal |
Sorry - no picture of obverse |
Sorry - no picture of reverse |
| Silver Medal |
Sorry - no picture of obverse |
Sorry - no picture of reverse |
| Bronze Medal |
Sorry - no picture of obverse |
Sorry - no picture of reverse |