alt Hacker NewsI'm not sure which technique they use but this person makes jewelry from snowflakes. They have videos showing their process, where they catch them on a tray and transfer them using a paintbrush to slide covers that are holding some chemical which capture their shape. Eyeballing it I think they're using the Formvar method.
Funny enough this person is actually where I stumbled upon the article submitted here. Danielle had linked it in one of the videos in a comment as part of an explanation of how it’s done. The jewelry is a wonderful application of the technique