@Cindy D. I don’t know, looks like a small silicone molded soap inserted into another. I have to think on this some more. Would soap dough work? I’ve never used that so idk?Oh no! I may have a similar problem
that seems to make done sense. How hard is it to cut with a wire cutter with an already saponified sosp imbedded?https://www.amazon.com/Echodo-Column-Silicone-Making-Supplies/dp/B072FVBSSB/ref=sr_1_36?dib=eyJ2IjoiMSJ9.W0URx6Kvcgi_oMGRXiK6qiDZlA8VFy6l_zsqe0wc-jd7r_1zzX2r7S8blQWksOmkyg01ekXIsGA1yRWOVxejCEqjUKkZxMYkFZ3lL0oySCiLdDVD8y55Zk-s9a6e8iF5-BTtS8Bcul-3_VEv3VtrvpYPuVYe6zYDmOIAGBa62vEv8mfbyZob7O2EHV6rPKLjtWbovT1UKg1AINg79gsvHIYqqCG9kmEan79A6eYBJfcKxFI05MLFKeyMez20zKwDMJPE4QuIkleqNteqFs-tmMSi7e2FBiXhU_QJsXQ5ctD9HQQJGnMcmYOYEPrRu8xp1n--5TZRVSOhWQl11LDK7oVZ40edRg9XPFsnjsp7_ClDEMJ0VOMLSwMV01NoiR6HLOGgV3H6h6FTKGF8a0YXKNjkcr2hf3s6A3zQ7TS_VD6i1vpbw7XfvmBMcPjyVvXr.0gDpMmQMTb_RBa4xG4yJz_uASKNygLV5GpsaDDRVlWw&dib_tag=se&hvadid=598724403302&hvdev=t&hvlocphy=9002375&hvnetw=g&hvqmt=e&hvrand=14957336026022165732&hvtargid=kwd-3174090765&hydadcr=4862_13229504&keywords=round+soap+molds&qid=1735575734&sr=8-36&th=1
Cindy D. could have meant a mold like this.
There are also heart, square, star molds etc. The round one would be good for a moon embed. Could also maybe use a small diameter (1") pvc pipe lined with freezer paper?