Dragon's Blood

Dragon's blood is a widely sought material which is very difficult to obtain due to the nature of it's origin. Most dragons are extremely adverse to bleeding in general and are highly possessive of their blood, no matter it's location. Outside of a dragon's body, the liquid blood quickly crystalizes into a cloudy dark red material resembling amber, or some varieties of jasper. It is a very tough material, requiring specific conditions to process depending on the end use. 
Dragon's blood is a highly restricted material due in part to most dragon's aggressive response to finding someone in possession of the material. As such it is one of the most commonly traded illicit materials, fetching high profits for those who are willing to risk trading. 

Uses

The reason dragon's blood is so highly prized, other than it's rarity, is it's wide variety of uses. 

• Medicine - One of the first uses that was recorded for dragon's blood was mixing the powder into an elixir to purify the body of most toxins. This was first recorded as a use for dragons themselves, but during a plague in Europe, a number of dragons told their companions to take the elixir to treat themselves and their families. This use was a closely guarded secret within the dragon handling community for most of a century before the use became more public knowledge.   
• Smithing - While the material is extremely strong, it cannot be easily sharpened to an edge for a weapon. Most smiths have found that the best use for dragon's blood is to create lames or plates to create a very strong lamellar or plate armor. Those creating this style of armor quickly find that plates of dragon's blood don't do well when touching one another, frequently shattering when struck against one another. Padding the material with leather or thick cloth seems to prevent much of the shattering.   
• Cooking - The flavor profile of dragon's blood works great with most meat dishes, as well as most savory preparations of vegetables. 

Type

Biomaterial