The Misty Mountains: Blobz gifts us a gem of a puzzle

Today's Video:

I am not sure what stone the heart of the mountain is, but this puzzle being "hard" and a gem feels aptly named!

Link to Play:

The Misty Mountains by Blobz https://link.sudoku-sleuth.com/TheMistyMountains

Rules:

Gandalf fell silent, gazing eastward from the porch to the far peaks of the Misty Mountains, at whose great roots the peril of the world had so long lain hidden.

Normal sudoku rules apply.

Digits on lines form a non-repeating consecutive sequence in any order.