What is the trade term for top-color turquoise?

The appropriate trade term for top-color turquoise is typically referred to as "Premium Blue." This designation is used in the gemstone market to indicate the highest quality and most desirable shade of turquoise. Premium Blue is characterized by its vibrant, pure blue color, which makes it highly sought after among collectors and jewelers.

Turquoise comes in various shades and qualities, and the classification helps buyers understand its value. While other terms may refer to different traits or compositions of turquoise, "Premium Blue" serves as a benchmark for the highest grade based on color. This highlights the importance of color in determining both the aesthetic and market value of turquoise.

Understanding these terminologies is essential for anyone working with colored stones, ensuring clarity in communication regarding quality and expectations.