How to hint (my boyfriend) that I want a necklace for my birthday?

A heart shaped necklace is that too much to ask for? I just want something small and pretty I could wear that makes me think about him, this is the first time we buy each other something for birthday. So :) we have known each other for two years and a bit more than a half, so I guess it's not that desperate if I ask him for one, true?

I have bought him a big beer glass (2.5 pints. he loves beer).
How to hint (my boyfriend) that I want a necklace for my birthday?
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