I highly recommend checking out these Canadian owned boutiques (amazing stuff): https://www.davieandchiyo.com/ https://sarahwalshbridal.ca/ (I had a custom backdrop necklace made here... She's AMAZING.)https://sugarcaneandco.com/ https://www.oliveandpiper.com/https://statementgrey.com/
I ended up getting a pair of earrings and a necklace from Lover's Tempo, a small Vancouver based business. It's not fine jewellery or anything like that, but I didn't want to spend a lot and I wanted something simple. I think for the price they have good quality items and I'm happy with what I got. They have an online store and they're sold in some physical retail stores too.
I found my hair pins and earrings from Amazon and my bracelet from Ardenes. I'm not someone who can spend a lot on jewelry that they know will only be worn once, so in total the 3 pieces cost me about $35.
If you don't need real diamonds, you can try Bittersweet. I would wait until they have their sale (sometimes 50% off). If you want the full set (headpiece, earrings, necklace) aim for the buy 2 get 1 free promo.
I bought a bunch of jewelry (2 pairs of earrings, a necklace, 2 bracelets and a hairpiece) from le chateau when they had their closing sale! But now that I've bought my dress the necklace and hairpiece won't go well with my dress so I need new ones. I saw some nice sets on Azazie but I don't know what the quality is like. I might order one to see!