Legally, the answer varies from state to state. In some states, there is very little impact at all while, in others, it can have a substantial influence on the outcome. Historically, there was a much higher correspondence between adultery and divorce then there is today.
Beach glass comes from fresh water and in most cases has a different pH balance, and has a less frosted appearance than sea glass. Sea glass takes 20 to 30 years, and sometimes as much as 50 years, to acquire its characteristic texture and shape. Sometimes also colloquially referred to as Drift glass from the longshore drift process that forms the smooth edges.
Since the twice-flipped 4 minute hourglass will stop at 8 minutes we can flip our 7 minute hour glass here for the second time. At this point it will have been running for 1 minute, we will flip 1 minute's worth of sand back to the top and it will run for another 1 minute. This will total 9 minutes. As shown: