Good quality bead and finding shop on Queen St W - Arton is the one place I must visit whenever I am in Toronto! Note that they own two stores right next to each other; one is for lower-end beads and findings, while the other has more gemstones and sterling silver. Quality is decent for most items, prices are quite good overall, and the range of products packed into the two storefronts makes this a worthwhile stop any day.Last trip I mostly picked up strands of chips, but they have previously been one of my better sources for druzies, raw stones and really unusual drilled stones such as astrophyllite and hypersthene. The lower-end shop usually has one of the better prices on bulk key rings you can find in a retail store.
LIke most of these bead shops on Queen, they are always running multiple overlapping discount deals and sales, as well as offering a frequent buyer card that is supposed to expire but that they always renew for me (maybe because I am from out of town?) It gets kind of complicated to figure out how to get the best deal, and they are always keen to push you to buy just.one.more.item to take your order to the next discount level. I don't always find that to be worth it.
Arton also has a website: http://artonbeads.net/ but it stocks only a small fraction of their huge selection, so I strongly recommend you skip it and travel to Toronto instead :)