California glass expert performed a failure analysis on a failed wine glass. Glass failure analysis requires locating the fracture origin. The origin is then analyzed microscopically to determine the cause of failure. In this case the failure origin was on the rim of the glass. At the failure origin is a very small mirror fracture surrounded by mist hackle. This demonstrates that the glass was impacted on the inner rim and propagated from that point to failure. The failure analysis labs at Read Consulting have the capability to analyze all sorts of glass failures.