I was in a hell act 2 walking game helping out a sorc and I killed a pack of unique claw vipers in the claw viper temple and a Jah dropped. I had to double check because I diidnt believe what I was reading. It looks like the chances of that are between 1:700000 and 1:1900000. I gave it to the sorc I was helping because they probably needed it more. In the same game we found a firelizard claw and a tgod.