In ancient times, sterling silver was a relatively stable and rare metal compared with the few single metals that were discovered and utilized at that time. It was more resistant to oxidation than iron, copper, tin and lead.
Today, there are more stable alloy products. As a dining utensil, the surface of sterling silver is easy to oxidize, so it will be eliminated.
When drinking water from a pure silver cup, its oxide layer will be absorbed, resulting in the deposition of heavy metals in the body, and silver ions will cause chronic damage to the liver.
Glass cups, mud cups, ceramic cups, pottery cups, bamboo and wood cups, stainless steel cups, and titanium cups are all safer than sterling silver cups!