The squash in the OP's picture from 10 years ago is for sure showing signs of black rot/gummy stem blight. nc-crn gave the correct diagnosis. Search results for "brown etch on squash" brings up mostly Australian websites and articles, a couple of which mentioned black rot as a cause. Rodney https://extension.usu.edu/vegetableguide/cucumber-melon-pumpkin-squash/gummy-stem-blight

Well after a brief search I know what it isn't!! LOL! Any clues to country of origin? Is it lead crystal...does it ring? Looks like lead crystal....and is it sharply cut?

The belief that black granite is impermeable is not entirely accurate. While granite is generally a durable and resistant material, it can still be susceptible to staining and damage if not properly cared for. The effectiveness of sealing can vary depending on the specific type and quality of the granite, as well as the sealer used. It's important to consider a few factors when evaluating conflicting opinions: Variability in Granite Quality: The quality of granite can vary, and some varieties may be more porous or prone to staining than others. It's possible that those who had negative experiences with black granite countertops may have had a lower quality or improperly sealed granite. Maintenance and Care: Proper maintenance is crucial for any countertop, including black granite. Regular cleaning, avoiding harsh chemicals, and promptly wiping up spills can help prevent staining and damage. Individual Use and Habits: The way countertops are used and maintained can differ among individuals. Some people may have different cooking and cleaning habits that could impact the longevity and appearance of their countertops. Regarding your question about disastrous issues unrelated to oversealing, while it is relatively uncommon, there have been cases of chipping, cracking, or staining of black granite countertops due to heavy impact, exposure to extreme heat, or the use of abrasive cleaners. However, such instances are not the norm and typically require significant force or misuse.

Thanks RL Relocation. Your comment is very helpful.