Sometimes if the trait is good, like robust for a stamina-based set, etc., I'll just put it in the guild bank. Otherwise, vendor. Not really worth taking up a guild trader item slot to only get a few hundred gold when I need room to sell something far more valuable.
I put these to stores sometimes, even blue if they have relevant traits, but if I lack the room for something more expensive, I kick from store the jewellery at first. My prices vary from 150 to 500, however I don't usually get anything valuable.
PC EU (PL): 14 characters. ESO player since 06.08.2015. Farkas finest quote: "Some people don't think I'm smart. Those people get my fist. But you, I like."
I was getting tonnes of (cr160) blue/green sithis jewelry while working towards my DB motif i tried selling it for 500G a piece... no sales
dropped price to 125G a piece no sales
dumped about 40 of them into a guild bank they were there for a week when someone messaged saying 'do u mind if i take them to try & sell them' i replied sure, GL with that