For many centuries, lots of people have believed that gold is one of the most expensive materials in the world. This, however, is absolutely wrong.
Here’s a list of materials valued from the lowest price to the highest. Let’s skip ahead a bit: gold is not even in the top three here.
16. Saffron — $11 per gram
This spice is unique, combining fantastic taste and great health benefits. Its production process is highly time and effort consuming, but the flavor and healing properties of saffron are unequaled by any other spice.