This is a conch shell made from a Japanese ivory shell (Akashinishigai). It can be blown, but the sound produced is only moderate. Regarding the manufacturing process, it has been thoroughly cleaned, disinfected, and processed. However, as it is a natural product, please refrain from purchasing if you are overly concerned or seeking perfection. It is also listed on other sites, and will be discontinued once sold out, so please be aware of this. Regarding transactions, we ask for no claims and no returns. SPEC Wooden mouthpiece, folk craft processed, blowing hole diameter 12mm Length: Approximately 16cm Width: Approximately 10cm Weight: Approximately 274g