Waterford Crystal is a very special type of glass that is made in a small place called Waterford in Ireland.
The glass is special because it has a lot of lead in it, which makes it super shiny! It's like when you play with a toy mirror and can see your reflection so clearly because it's so shiny.
People really like Waterford Crystal because it looks very fancy and expensive, and makes them feel fancy and special too. They use it for special occasions like weddings or fancy dinner parties.
To make the crystal, special workers called glassblowers heat up the glass mixture and then blow it into a special mold to make the shape of the crystal design. Then they add special designs like swirls or stars to make it even prettier. Lastly, they polish it up really well with special tools so it shines like a diamond.
That's basically what Waterford Crystal is - super fancy and shiny glass made in a special place in Ireland by talented workers!