What is the physical difference between different karat sizes of GOLD and why are there different prices?
24k is almost pure gold. 18k is 75% gold, 14k is 58% gold, and 10k is 41% gold. The gold is mixed with other metals. karat is how gold is weighed. Obviously the more gold that there is, the higher the cost. Here is a great guide: http://www.jewelers.
