How much are blue diamond earrings valued at?

I have a pair of blue diamond earrings, and I was wondering what the value of them might be. I want to possibly sell them-if they are of high enough value.

Here are the specs:

each earring is .55 cts each
set in 10k yellow gold posts
they are round brilliant cut, and they are natural and untreated- they aren’t even irradiated-like most colored diamonds are.
They are very clear, but do have a few inclusions.