Cracked crystal replacement part

So my crystal spontaneously cracked. They cannot provide a replacement, only an entire new case plus crystal.

Does anyone know the dimensions of the crystal? I measured the inside case diameter at 34.40mm, but I’m not that good with calipers.

My watch is a prior version of the skeleton, it uses a Miyota 8 series. It’s not letting me upload a picture.

It’s similar to this:

Dial is slightly different