애플와치에 들어가는 인공사파이어를 공급하는 업체가 있다고 함



https://appleinsider.com/articles/15/08/19/russias-monocrystal-identified-as-apple-watch-sapphire-supplier

Russia's Monocrystal identified as Apple Watch sapphire supplier | AppleInsiderApple's scratch resistant sapphire supplier for the Apple Watch is reportedly Monocrystal, a Russian firm which has become the largest synthetic sapphire manufacturer in the world.appleinsider.com


https://www.info-clipper.com/en/company/russia/monocrystal-belgorod.rud8ug9b9.html