Who constructed the first altar covered with gold?

I think the first reference to an altar covered in gold is Aaron. When Moses was receiving the ten commandments from God at the top of the mountain and Aaron was in charge of all the people. They used the gold jewelry of the people to build an altar but it was a pagan tradition so when moses came down from the mount he broke the tablets God had written the 10 commandements on out of anger. But, obviously if the people knew to make an altar of gold they had seen someone do it before. The first sacrafices were Cain and Abel after God had blessed their work.