The Identification of Zachery-Treated Turquoise (Zachery Method)
The Zachery process improves the properties of natural turquoise without using artificial additives such as plastic. Zachery-treated turquoise retains gemological properties similar to those of untreated turquoise. As a result of this process, turquoise is more resistant to discoloration and oil absorption, and will take a better polish. Learn more about the Zachery process:
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