Mulberry silk is generally more expensive than silk. This is primarily due to the specific type of silk worm, the Bombyx mori, which is bred to produce mulberry silk. The process of cultivating and harvesting mulberry silk is more labor-intensive and time-consuming compared to other types of silk. According to a report by the U.S. Department of Agriculture (USDA), the cost of producing mulberry silk can be up to 50% higher than other types of silk due to the higher quality and the meticulous care required for the silkworms. The rarity and the unique properties of mulberry silk, such as its smooth texture and luster, also contribute to its higher price point.