Real mouse skull encased in solid copper, adorned with three natural clear quartz crystals and three peridot stones, as well as two natural green tourmaline crystals bridging gaps in the cheek bones. Hangs from a 22" copper chain with a lobster clasp. All of the bones I use are found / ethically sourced. The skull in this piece was collected from an owl pellet- No animals were harmed for the purpose of making jewelry. I seal all of my electroformed pieces with a clear protective coating.