Warning: people get frustrated when they talk about jewelry and see the jeweler in the same sentence. After having sailed on eBay for 20 years and I feel comfortable, I can safely order a pearl necklace from abroad to sellers with whom I have previously worked, I know that these pearls originate inside an oyster (although some are Not everything), and still get a price that anyone can work with.
What I’m saying is that there are jewelry deals, but you have to spend time searching. If you decide it is not for you, there are many gems available to buy at normal prices and situations.
The best of luck with your search. I am very predisposed, but I love jewelry as a gift. I hope your girlfriend gets as dizzy as I am about it. It encourages the enjoyment of the giver, I think, to see the recipient happy too.
Actually, if I remember correctly, the style first came up in the 1700s in England. In those days, the choker was made of silk, satin or lace, usually worn with a turtleneck dress, and had a cameo or precious stone attached to the front. I am not aware of the connotations that the modern choker...