After your decimation of the temple of Eilistraee, you have found the locations of the 4 remaining gems, however the location of the hilt is still unknown.
The gems are located as follows:
- The kingdom of the Quenethelle Elves
- The kingdom of the Ironspine Mountain Dwarves
- The Sorceror’s of the Blackflame in Waterdeep
- The Dragon Alarenara