내구성이 천연 다이아몬드와 같지 않고 실제 다이아몬드와 같은 광학적 특성을 갖지 못하기 때문입니다.The observation that outdated windows are sometimes found to generally be thicker at The underside than at the top is often available as supporting evidence for the look at that glass flows about a timescale of