metal restoration, give advice, pls

[AleFF]

I have a flint, presumably - the times of Kievan Rus
decided to try to restore it
Lightly treated with electrolysis - 30 minutes on a low current. Next, I smoothened the oxides with emery paper and treated it with dremel-medium hardness.
What further advice do you give on clearing and conservation?
before

after

 

Amazon Forum Fav 👍

DR.ÖTEK Metal Detector, Waterproof Gold Detector, Pinpoint & Terrain Modes, Professional Metal Detector - Grab it through Amazon!

[AleFF]

continued to clean.
more photos
Now I preserve in a vegetable inhibitor (tannin) and will be covered with microvascus

 

[A2coins]

That.looks good I would coat it with something so it doesn't corrode again. Well done