Eric Charlot of DIGIT-HALL.com has written a great review ( French) of the Kiseki Blue N.S. & Kiseki PurpleHeart N.S.
Fusion Acoustic is the distributor of Kiseki cartridges in France. Check their website HERE and their Facebookpage HERE. The full review you can read HERE ( French )
More information about the Kiseki cartridges you also find HERE