Saffron is a prized spice, also called "red gold," derived from the Crocus sativus flower's stigmas (threads). The most expensive spice in the world by weight, it is labor-intensive to harvest by hand. Saffron is used globally for its distinctive flavor and aroma, as a natural yellow-orange food coloring, and in traditional medicine for various ailments.  
Key Characteristics
Source: Saffron comes from the red, thread-like stigmas of the Crocus sativus flower. 
Appearance: The stigmas are bright red, with a yellowish-brown style. 
Aroma and Flavor: It has a unique, distinct flavor and scent. 
Color: It imparts a brilliant yellow-orange color to foods and textiles. 
Value: It is the most expensive spice in the world due to the labor-intensive harvesting process.