Buy Turquoise: Everything You Need to Know Before Choosing This Extraordinary Gemstone

16-07-2026
Turquoise Treatments

Turquoise is one of the world’s most beloved gemstones. Its distinctive color, ranging from sky blue to greenish-blue, has captivated ancient civilizations and continues to be the centerpiece of timeless jewelry.

However, buying turquoise without understanding its unique characteristics can lead to an uninformed purchase. One of the most common questions concerns the treatments that turquoise may undergo.

The good news is that treated turquoise is not necessarily of lower quality. What truly matters is the seller’s transparency and the buyer’s knowledge.

Buying Turquoise Also Means Understanding Its Origin

Before discussing treatments, it’s important to know that turquoise is mined in different parts of the world, each producing stones with distinctive characteristics.

The most highly prized is undoubtedly American turquoise, particularly that mined in Arizona. Among all the mines, the legendary Sleeping Beauty Mine is the most famous, renowned for producing turquoise with a vivid, uniform sky-blue color and virtually no matrix. Since the mine closed several years ago, Sleeping Beauty turquoise has become even more desirable among collectors and gemstone enthusiasts.

Iran and Mexico are also home to significant turquoise deposits, producing beautiful stones with distinctive colors and matrix patterns that reflect their geological origins.

Natural Turquoise: The Rarest and Most Valuable

When we refer to natural, untreated turquoise, we mean a gemstone that has not undergone any treatment.

The stone is simply cut and polished while preserving all of its natural characteristics.

This means:

no artificial coloring;
no resin impregnation;
no stabilization process.

Because turquoise is naturally porous and relatively soft, finding completely untreated specimens with rich color and good hardness has become increasingly rare.

For this reason, natural turquoise is highly sought after by collectors and those looking for the greatest gemological value.

Stabilized Turquoise: The Ideal Choice for Everyday Jewelry

One of the most common treatments is stabilization.

During this process, natural turquoise is impregnated with a clear resin that penetrates the stone’s pores, making it significantly more durable.

The benefits include:

increased hardness;
improved resistance to impact;
greater long-term durability;
color that remains essentially unchanged.

Many turquoise gemstones used in fine jewelry are stabilized because, without this treatment, they would often be too fragile for everyday wear.

For anyone looking to purchase jewelry to wear regularly, stabilized turquoise is often an excellent choice.

The Zachery Process: One of the Most Respected Treatments

Over the past few decades, the Zachery Process has become one of the best-known—and most respected—turquoise treatments.

Unlike traditional stabilization, it:

does not use resin;
reduces the stone’s porosity;
improves polishability and color stability;
preserves characteristics that remain very close to natural turquoise.

The exact procedure is protected as a trade secret and cannot be identified through simple gemological observation. Specialized laboratory testing, such as EDXRF spectroscopy, is typically required to detect the treatment.

For this reason, it is essential to purchase from reputable professionals who fully disclose any treatments applied to the gemstone.

Dyed Turquoise: When the Appearance Is Altered

Some turquoise is also artificially dyed.

The goal is to create a more vibrant color or to make naturally pale material appear more uniform.

This treatment is often combined with stabilization or used in reconstituted turquoise, which is made by bonding together small fragments of natural turquoise.

In these cases, the gemstone’s final appearance may differ significantly from the original material, making full disclosure especially important.

The Value of Turquoise Also Depends on Transparency

In gemology, not all treatments carry the same significance.

Some are intended simply to improve the stone’s durability without noticeably changing its appearance, while others have a greater impact on its color or overall structure.

What truly matters is that every treatment is clearly disclosed, as it directly affects the gemstone’s commercial value.

A trustworthy jeweler does more than simply sell a gemstone—they guide customers through the selection process by explaining its origin, characteristics, and any treatments it has received.

Buying Turquoise with Confidence Starts with Knowledge

Those seeking a collector’s gemstone will likely prefer completely natural turquoise.

Those looking for jewelry to wear every day may find stabilized turquoise or turquoise treated with the Zachery Process to offer the perfect balance of beauty, durability, and longevity.

There is no universally right or wrong choice—only the choice that best suits your needs.

Ultimately, buying turquoise means choosing a trusted professional who understands the gemstone and is committed to providing complete transparency.

If you have questions about turquoise, want to learn more about its origin, or need help selecting the perfect gemstone for your next piece of jewelry, the Aucella team is here to provide expert guidance and help you purchase with complete confidence.

Watch Our Video About Turquoise Treatments

If you would like to learn more, we have created a short video explaining the differences between natural, stabilized, dyed turquoise and turquoise treated with the Zachery Process.