Christi Friesen is my favorite artist; so it's not surprising that I love her product line at https://www.christifriesen.com. I put together a kit with her Flutter Wings texture sheet and my favorite Surface FX colors, Reflections and Tidepool, plus the EasyCollar template and findings, to create this butterfly necklace. You can make your dangling butterfly from UV or 2-part resin or make it with polymer clay.
Snow Queen Collar Kit
1 bar each Sculpey Premo Accents in Pearl and White Gold Glitter
UV Resin - Lisa Pavelka Magic Glos or your UV resin brand of choice. (You can also use 2 part resin or you can make the butterfly from Polymer clay.)
Sculpey Bake n'Bond
Glass or metal bowl
Parchment or waxed paper