kate0 - If you want to find a good jewelry online, I can advise you to check https://primestyle.com/collections/bridal-sets where are a lot of different ideas and wonderful solutions. I was looking for such a service and it is a pretty good opportunity for me to get it online.

asmr - Here you can buy jewelry online
Madewell. Our favorite piece: Chunky Medium Hoop Earrings—$24.
Nordstrom.
Mejuri.
Etsy.
Baublebar.
Studs.
Anthropologie.

denial - There are many online stores from both large and global brands, as well as local ones. My last purchase was for my wife, and I found a great store in Denmark - https://ninaroende.dk/produkt-kategori/oereringe/roede-oereringe/ where I found incredible jewelry