What is the difference between natural stone veneer&manufactured stone veneer?

A stone veneer is a thin layer of stone placed over another material to give the whole surface the look of being stone. Manufactured stone is a material made from concrete that imitates real stone.
Stone VeneerA stone veneer is a thin layer of stone pieces, held in place by mortar. Stone veneers are used in places where building entirely out of stone would be too expensive or heavy, but the appearance of stone construction is desired.

Manufactured Stone veneerManufactured stone, also sometimes known as cultured stone, is a material made from concrete and colored pigments. It is molded and treated to imitate the look and feel of real stone.

Manufactured Stone Advantages
Manufactured stone often looks just like real stone products but is significantly lighter in weight. Manufactured stone is often also less expensive than real stone.

Manufactured Stone Disadvantages
Manufactured stone can be harder to apply to a surface than real stone. When using manufactured stone, it is important to get the stucco just right, or the "stones" can sometimes fall off.

Using Real Stone
While using real stone for a veneer is often more expensive, real stone is more durable over long periods of time and is less likely to be discolored or damaged by deicing salts or chemical cleaners.