It's an embarrassment of diamonds, rubies and sapphires. Are you sure you're up for it? There's not a pearl in sight.
I suppose if you call a group:
A murder of crows.
A glaring of cats.
And a bloat of hippopotami.
Then you could call it an embarrassment of diamonds.
I'm currently getting rings resized, and other pieces remounted in different settings. Mom was very heavy at one time, and then made up her mind to lose weight and kept it off. Some of her jewelry she had resized or reset several times. Some of it fits me. Some needs to be reset again to be wearable.
My sister wanted and got most of the big stuff and all the emeralds, but it suits her better than me. We came out pretty even. And we also gave my brother quite a lot for his wife and daughters, and he wasn't expecting anything at all. But Mom always treated every child equally and we learned that well.
UPDATE: My brother asked again if it was OK that he had Mom's original engagement ring, because he thought we both had shocked looks on our faces when Dad gave it to brother. Sister decided it was the proper time to say, "Yes, that was supposed to go to me, but it's OK. Your wife looks thrilled to have it." Brother said that if anything happened to his wife, the ring would go to my sister. I swear, I have the best family, ever.