What is another name for the term 'authentic turquoise'?

The term 'authentic turquoise' refers specifically to turquoise that is naturally formed in the earth, distinguishing it from other forms that may be created or altered in some way. This naturally occurring turquoise is characterized by its unique color variations and mineral composition, formed over thousands of years through geological processes.

Naturally occurring turquoise is valued for its quality and aesthetic appeal, which is why it is often considered the standard for authenticity. This makes the term a direct match for the definition of 'authentic turquoise,' as it signifies that the stone is genuine, without any artificial enhancements or manufacturing.

Other options like synthetic turquoise refer to imitation products created in a lab designed to imitate the appearance of natural turquoise but do not possess the same geological history. Similarly, altered turquoise involves modifications to the original stone, either to enhance its color or durability, thus compromising its authenticity. Market turquoise is not commonly recognized terminology for referring to the natural stone specifically, further underscoring the correctness of 'naturally occurring turquoise' as the appropriate term for authentic turquoise.