DD had lots of dress up ones from 2/3yo. She has had more grown up ones since about 5y, maybe a bit littler - normally bought as a gift for her. She is 6 now and only wears them for special occasions and parties.
She has two special ones - one has a very teeny tiny diamond in it which she loves. It wasn't that expensie, perhaps £13 or £14. But she really likes it.
She also has a gold chain with a cross. This is very precious to her as it belonged to her great grandma who died about 18 months ago. Her great grandad gave it to her after she said, saying great grandma had wanted her to have it to remember her buy. DD is very carefulw ith this. It only gets worn for family special occasions such as meals out. Not allowed to be worn for children's parties for example incase it gets broken or lost.
My DD would like the Boden beads. She has something similar that my parents got her from Pumpkin patch. Didn't cost quite as much though. She wears them at weekends more often.