Amalric Walter was a man who lived a long time ago and he was very good at making beautiful things out of glass. Do you know what glass is? It's a special material that looks like ice or clear plastic, but it's much harder and can be shaped into different things when it's heated up.
Anyway, Amalric Walter made things like vases, bowls, and lamps that were super pretty and decorative. He was so good at it that people all over the world wanted to buy his creations.
People really liked the way that he added colors and patterns to the glass. He would mix different colors together to create beautiful swirls and shapes that looked like flowers or patterns you might see in a kaleidoscope.
What's really amazing is that Amalric Walter did all of this by hand back when there weren't machines to do everything for you like there are today. Imagine having to make something as big as a vase all by yourself!
So, in summary, Amalric Walter was a really talented artist who made pretty things out of glass a long time ago. People loved his creations because of the colors and patterns he added to the glass, and he did it all by hand.