The one (and the only one) I have (got it from Pete - Walter you've seen it) doesn't look polished.
And it's beautiful

Mania
And it's beautiful

Mania
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Best way only if what you want is shiny with no thought to the damage you're doing to the fossil.
Ditto, depending on the quality of the tooth use full strength or 50/50%....Full strength left for too long will dull the enamel [gets the 'crud' off faster though]...Full strength for 4-6hrs will dissolve most 'crud' and loosen what's left so it can be easily picked off w/o harming the enamel...afterwards soak it in distilled [bottled] water for several days [changing the water each day] to get all the salt that has penetrated out......The tooth will then be 'stable' and you can shine it w/a little light buffing...Sometimes you'll get lucky and find a complete tooth w/good, shiny enamel and little or no 'crud'....Just soak it in bottled water, no apple cider vinegar........Those are the 'keepers'I was told to not use the white vinegar, but Apple Cider Vinegar, which I have and it works great. You may have to leave them soak over night, but it does do the trick. Also, Amourall works good for shining them up.