Good news: I found them online!! You can get them here from Save on Crafts. They are 2 gallon glass jars, but surprisingly not heavy at all.
I wanted to share with you some good news! I seem to get a lot of questions about where I got my very large mason jars, and I got them at Marshalls last summer. I’ve never seen them since, and I don’t think anyone else has had any luck finding them.
I love them here on my dining shelves, but I hardly use them. I’d love to put them back on my kitchen counter one day, but I’d probably fill them with something we use everyday – like cereal.