Featured Restoring cracked Whitby jet?

Bought this at a good price, some damage to be expected, i.e. the crack across the front. Not a big deal, but wondering if there's room for improvement? Could it be enhanced by something like wood filler and a good polish?

 

I know they restore antique jet in Whitby, but don't know how.

The crack is so small, I don't think you can get wood filler in there. Also, I don't know if woodfiller expands under certain circumstances (heat, damp), causing more damage.

 

Hmmm, what about charcoal dust? Since they are the same thing and yeah I have seen advertisements of jewelry repair in Whitby, but that might triple the cost

 

I'm trying to figure out the possible significance of the letters...if not simply a monogram of the wearer's initials.
I've seen AEI for Amity, Eternity, and Infinity.
And I've seen IMO for In Memory Of.
Yours looks like AMI/MIA/IMA/etc...? Or that a could be an e...

 

I saw both AEI and IMO here, perhaps intended to be read as both? Since these two are most common for mourning locket

 

Thank you sounds like a great plan

 

I M E/Omega?
In Memoriam for ever/eternity/the end of time?

 

I don't know what it says, or how to restore it, but it's a beauty!!!!!!!

 

That’s even cooler

 

A chunky beauty indeed the biggest locker I had so far

 

Clever! That would be an effective kyratisation!!!

 

Or try a black oil pastel crayon.