The scabbard is really similar to those made in Tbilisi, but the “markharay” ornament on the back says loudly that this is the work of a master from Dagestan (I am not in this field
but I have the book “History of the Dagestan Ornament” by Paruk Debirov)
The subject is very unusual. I think that the Kindjal is older than its scabbard, which were made by special order at the very end of the 19th or at the beginning of the 20th century. The chain was added somewhere in another country, not in the Caucasus.