I enjoy making epoxy resin jewelry with my eldest and she loves geodes, so branching out to larger projects and adding this mold, BigOtters Jewelry Casting Molds Silicone Resin Jewelry Molds, to our collection was a must. This set of silicone molds includes four different molds. We haven't made anything with these molds yet, as we are waiting on more epoxy, but thus far, I can confidently say that the molds are top quality compared with other molds we have. There are no defects and I expect them to work as intended. We are going to make geode cup holders for gifts, but my daughter wants to make a chandalier or another hanging craft for her bedroom, but I am sure you can find other uses. We were very excited to see these molds and are looking forward to crafting with them. 5 Star!!!