First off, there is no need to rush through that now. Take your time. It was over 6 months after my dad died that we cleaned out their house and divided possessions.
I only have one brother but there are grandchildren. My mom gave me a good amount of jewelry over the years, before she died. As such, I gave my brother right of first refusal of the rest (there was still quite a bit of valuable jewelry) because I wanted it to be equitable. My brother insisted that I still get the lion share of it because do wear her pieces. I did make him pick out pieces for his daughter and then we gave him most of our dad and grandfather’s jewelry.
D knows that when we die, if there is anything from the grands that she doesn’t want to keep, it is offered to her cousins first. If they don’t want it, then she can sell it. (And she’s to give to them, not sell to them if they want it).