If I see a piece of jewellery I love, and I can afford it, I buy it!
DH does also buy me jewellery, but he's not allowed to shop for it without DS accompanying him as even after thirty five years he still gets it wrong, sometimes in quite spectacular fashion!
Years ago he bought me a gold locket for Christmas, I'd been dropping hints about it for months, so come Christmas morning was delighted to see the box with the jeweller's name on, but when I opened the box it was a locket all right, but a totally different design! I hated it on sight, and to this day I still detest it!
I know I should have told him it was wrong, taken it back and exchanged it for the correct one, but I didn't want to hurt his feelings, so I wear it, and hate it every time, and he still thinks I like it!
I have a lot of jewellery, inherited from my mum, my mum in law and my paternal grandmother. The most treasured of my inherited jewellery is my great grandmother's engagement ring, it's from Tiffany, bought in 1887 in New York. It's been passed down from Great Gran, Nana, Mum and now it's mine! It's far too small for my fingers, but I don't want it 'messed about with' and enlarged, so I wear it on a chain as a pendant.