Rock Discoveries

Uncovering the Beauty and Value of Chrysocolla: Properties Occurrence and Authenticity

Introduction to Chrysocolla

Chrysocolla is a blue-ish stone that is often mistaken for turquoise due to its similar appearance. But what is this beautiful stone, and why is it so special?

In this article, we’ll explore the properties, grades, and occurrence of chrysocolla to uncover its unique characteristics and value.

History and Origin of the Name Chrysocolla

The name chrysocolla has its roots in ancient Greek goldsmithing. In those times, goldsmiths used a soldering flux called chrysocolla that was made by fusing borax with azurite and malachite.

This flux was used to make it easier for metals like gold and silver to bond. Hence, when the blue-green mineral was discovered, it was given the name “chrysocolla.”

Properties and Grades of Chrysocolla

Chrysocolla is often compared to turquoise due to their similar appearance. However, chrysocolla is less rare and less valuable than turquoise.

Both stones are copper-bearing minerals, but turquoise is formed in a different way and has a more valuable hue of blue.

Composition and Color of Chrysocolla

Chrysocolla has a multi-compound structure and ranks at 2.5 to 3.5 on the Moh’s scale. It is known for its deep blue color and can range from a light blue-green to a dark blue.

The finest grade of chrysocolla is known as Gem silica or chrysocolla chalcedony. It is translucent and has a smooth texture, making it ideal for jewelry making.

Occurrence of Chrysocolla

Chrysocolla is found in copper-rich ore bodies, often in the oxidation zone. It is sometimes found as a secondary mineral that co-occurs with copper ores.

An example of this is the Eilat stone, a blue-green mineral that is mined in the copper mines of Timna Valley, Israel. Eilat stone is a gem-quality chrysocolla that forms a layer over chalcedony.

Chrysocolla is also found in other parts of the world such as Arizona, USA, Mexico, Chile, and Peru. It is often found in association with other copper minerals such as malachite, azurite, and turquoise.


In conclusion, chrysocolla is a beautiful gemstone that is often compared to turquoise. It has a deep blue color and a multi-compound structure that makes it a unique stone.

The occurrence of chrysocolla is mainly in copper-rich ore bodies and often co-occurs with other copper minerals. Understanding the history, properties, and grades of chrysocolla can help you appreciate this gemstone’s beauty and value.

3) Finding Chrysocolla

Chrysocolla can be found in various locations around the world. For those in the United States, the Western states are the most promising places to search.

Arizona, New Mexico, Nevada, and Utah are among the most prolific states for finding chrysocolla gems. The Mindat database is an excellent resource to use while searching for chrysocolla, as it lists the location, geology, and other relevant information about mines that produce chrysocolla.

Before heading out to look for chrysocolla, it is essential to do research to check its legality and safety as some areas may be private property or contain hazardous materials. It is always best to seek permission to enter land, especially if it is privately owned.

If the area is on public land, ensure to follow state and federal laws regarding mineral collecting. Safety risks are also a concern, particularly with old copper mines, so ensure to take proper precautions, including wearing appropriate gear such as gloves, a hard hat, and safety goggles.

One notable location to find chrysocolla is the Inspiration Mine in Gila County, Arizona. The almost-120-year-old mine is historic in the mining industry, and it played a significant role in the creation of Arizona’s economy.

The Miami-Inspiration deposit was discovered in 1910 and closed in 2002. The deposit produced substantial amounts of copper, silver, and other minerals such as chrysocolla, malachite, and azurite.

4) Authenticity and Identification

Fake chrysocolla specimens, often stabilized with resin, are common in the market. To identify fake chrysocolla, one must know what to look for.

Many stabilized specimens acquired a green or sandy matrix that often doesn’t resemble chrysocolla’s true hue. Mid-grade chrysocolla stones are also commonly stabilized to enhance their color and durability, which can affect their authenticity in the process.

One way to check authenticity is through a heated pin test. This method checks if the stone’s color is artificial, reactions to heat to distinguish genuine from fake pieces.

Chrysocolla can also be distinguished from turquoise by examining black veining in the stone. Turquoise has a black matrix that resembles oxidized iron, and the occasional black lines and veins can be mistaken for chrysocolla.

However, chrysocolla has a brownish veil or skin that separates the dark blue layer from the brown matrix, while turquoise’s iron matrix can be irregular or blocky with brownish incrustations. Chrysocolla is also softer than turquoise with a degree of 2.5 to 3.5 on the Mohs scale.

Turquoise is a little bit softer with a degree of 5 to 6 on the same scale. One can also distinguish authentic chrysocolla by examining the stone’s value.

Chrysocolla is a less rare and less valuable gemstone than turquoise, and this can adversely affect the price. Stabilization is sometimes used in chrysocolla, similar to turquoise, to enhance the material’s color and durability.

Although it can affect the stone’s authenticity, it also makes it easier to use in lapidary work. Before buying any chrysocolla piece, request information about the stone’s stabilization process to better understand its authenticity.



In conclusion, chrysocolla is a unique and beautiful gemstone that is often compared to turquoise. Its composition, grades, occurrence, authenticity, and identification are essential aspects to consider when exploring this gemstone.

Chrysocolla is a copper-bearing mineral, and its deep blue hue is highly sought after. It is often compared to turquoise, but it is less rare and less valuable than turquoise.

Chrysocolla can be found in various locations globally, including copper-rich ore bodies and places where it co-occurs with other copper minerals such as malachite, azurite, and turquoise. When searching for chrysocolla, it is essential to do research beforehand and ensure that the area is legal and safe to visit.

Mindat is an excellent resource to aid those in finding chrysocolla while collecting minerals. Authenticity and identification are crucial aspects when purchasing chrysocolla.

Synthetic or stabilized specimens are often on the market, while some mid-grade chrysocolla stones are also stabilized. It is best to have knowledge of identifying authentic chrysocolla from these fake specimens.

The heated pin test, checking for black veining, comparing its degree on Mohs scale with turquoise, and understanding their value are useful methods to authenticate and avoid purchasing fake pieces. In conclusion, chrysocolla is a remarkable gemstone with its unique characteristics that sets it apart from other gems.

Understanding the aspects of its composition, grades, occurrence, authenticity, and identification establishes its value and meaning as a precious gemstone. In conclusion, chrysocolla is a valuable gemstone with a rich history and unique characteristics.

Its availability, authenticity, and identification are crucial aspects to consider when buying or collecting this gemstone. With the right knowledge and research, one can appreciate chrysocollas natural beauty and its significance in the gemstone industry.


Q: Is chrysocolla a rare gemstone? A: Compared to other gemstones, chrysocolla is less rare.

Q: What is the difference between chrysocolla and turquoise? A: Chrysocolla has a deeper blue hue, is less rare and less valuable than turquoise, and has a different composition.

Q: Where can one find chrysocolla? A: Chrysocolla can be found mainly in copper-rich ore bodies and other locations around the world, including the Western states of the United States.

Q: How can one identify authentic chrysocolla? A: One can use several methods to identify authentic chrysocolla, such as the heated pin test, checking for black veining, comparing it to turquoise, and examining its value.

Q: Is exploring old copper mines a safe endeavor? A: Old copper mines can be dangerous, and one must take proper precautions and research beforehand to ensure safety.

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