To tell if an opal is real, examine it for color and fire and look for inclusions and patterns. Opals that are too perfect or uniform in color are likely fake.
Now, let’s dive into the characteristics of real opals and how to differentiate them from imitations. Opals are unique and fascinating gemstones that have been prized for their stunning play of color since ancient times. Due to the rarity and value of high-quality opals, there are many imitations and synthetic versions on the market.
Identifying real opals can be challenging for the untrained eye, but with a little knowledge and observation, you can learn to distinguish genuine opals from fakes. In this article, we’ll discuss the physical properties, types, and sources of opals, as well as some common imitations and how to spot them.

Credit: rockseeker.com
Understanding Opal
Definition Of Opal
Opal is a stunning, iridescent gemstone that’s prized for its vibrant colors and unique play of light. Here are the key points to know about the definition of opal:
- Opal is a non-crystalline mineral with a high-water content, typically composed of silica gel.
- It’s formed over millions of years through a combination of weathering and geological processes.
- Opals come in a wide range of colors, including white, black, and fire opal, which features warm hues of red, orange, and yellow.
- The stone’s most coveted feature is its play of color, which causes the gem to flash different hues when it catches the light.
Different Types Of Opal
While all opals share certain basic characteristics, there are several different types of opal available, each with unique qualities. Here are some of the key points to know about the different types of opal:
- White opal: This is the most common type of opal, and it comes in a range of pale hues, including white, cream, and light gray.
- Black opal: Black opal has a dark, mysterious body color and often features a striking play of color that makes it highly prized by collectors.
- Boulder opal: This type of opal is formed with the host rock still attached, which means that the opal veins are visible on the surface of the stone.
- Crystal opal: Crystal opal is a transparent or translucent variety that often shows a diverse range of colors.
- Fire opal: This is a unique and relatively rare type of opal that features warm, fiery tones of red, orange and yellow.
Characteristics Of Opal
To determine if opal is real, you need to understand its characteristics. Here are some key features that make opal unique:
- Play of color: The most important characteristic of opal is its play of color, which is caused by a diffraction of light.
- Opacity: Opal can be transparent, translucent, or opaque depending on the type and quality of the stone.
- Hardness: The hardness of opal ranges from 5.5 to 6.5 on the mohs scale, which means it’s relatively soft and can be scratched or chipped.
- Water content: Opal has a high water content, typically between 3 to 21%, which makes it sensitive to heat and dryness.
- Cleavage: The stone is amorphous, meaning it doesn’t have any cleavage planes and can be carved into different shapes without risk of fracturing.
Understanding these characteristics is important when determining if opal is real or not. By examining the play of color, opacity, and other features of a stone, you can determine if it’s a genuine opal or a synthetic or imitation piece.
Identifying Genuine Opal
Physical Characteristics Of Genuine Opal
Opals are one of the most captivating and impressive gemstones available. While these gemstones have a unique appearance that might be hard to replicate artificially, certain physical characteristics can help determine if an opal is genuine or not. To identify genuine opals, keep these physical characteristics in mind:
- Color: Since opals are a mixture of silica and water, they often display a diverse and appealing spectrum of colors. Usually, genuine opals have vibrant colors, and it’s rare to see transparent opals.
- Brilliance: Authentic opals have a brightness that originates from the gem’s interior. The colors of genuine opals are alluring, and it’s common to view them from different angles to appreciate the colors better.
- Pattern: The pattern of genuine opals is an excellent indicator of their authenticity. Look out for a vivid and unique pattern that follows a random and chaotic design. The play of color should also form a consistent and continuous pattern.
Observation Techniques
Opals are stunning and precious gemstones that require scrutiny when considering their authenticity. Identifying genuine opals requires a few observation techniques. Here are a few techniques to help you spot an authentic opal:
- Check for impurities: Genuine opals may display impurities, such as small sand particles inside the gemstone, in the same way, that natural gemstones may have inclusions.
- Observe the color: Genuine opals are known for their vibrant and attractive colors, which can’t be duplicated artificially. When you see a gemstone with subdued or uniform colors, it is most likely fake.
- Use a magnifying glass: Magnification can help you discover whether the opal is authentic or not. Real opals have unique patterns, flashes of color, and distinct inclusions that are often hard to spot with the naked eye.
- Study the surface: Authentic opals have an uneven surface, which helps the play of color appear more vibrant and alluring. If an opal appears smooth and even with a flat surface, it’s most likely a fake.
Remember, it’s best to buy opals from a reputable dealer who can provide guarantees and certificates of authenticity. These observation techniques can help identify genuine opals, but it’s always essential to get a professional’s opinion when making such an investment.
Common Misconceptions About Opal
Opals are some of the most remarkable gemstones with their vivid and dancing colors, making them a popular choice in the world of jewelry. Unfortunately, with their beauty comes several common misconceptions about their quality and value. Let’s clear things up by addressing these misconceptions.
Misconception 1: Opals Are Fragile And Cannot Be Worn Regularly
- Opals are not as fragile as you might think. While they are softer than other gemstones like diamonds or sapphires, they are still durable enough to wear regularly.
- The most delicate part of an opal is the thin layer of silica spheres that reflect light, which can chip or crack easily. To prevent damage, avoid wearing opal jewelry during physically demanding activities, and clean it only with a mild soap and water solution, avoiding harsh chemicals.
Misconception 2: Opals Can Be In Rare Colors Only
- Opals are available in several colors, including white, black, pink, yellow, and orange.
- The rarer colors have a more significant impact on the value of the stone. For example, black opals with vibrant reds and blues are the most valuable. However, rarity does not necessarily determine beauty; some may prefer the soft hues of a white or cream opal.
- Everyone has different tastes and preferences when it comes to stone color, so go for the one that speaks to you.
Misconception 3: All Opals Are Valuable
- When it comes to opals, value depends on several factors, including color, pattern, size, and origin.
- Not all opals are valuable, and the value can range widely. Factors such as flaws and cracks in the opal can significantly lower its value.
- Opals from specific regions are more valuable. These include australian, ethiopian, and mexican opals. However, do not let the origin alone fool you into thinking an opal is valuable; it must possess other qualities to be worth the price tag.
Opals are not as fragile as you might have thought, come in a variety of colors and rarities, and not all opals are valuable. If you’re interested in purchasing opal jewelry, make sure you take the time to understand the quality and unique properties of each stone.
How To Care For Your Genuine Opal
Opals are unique among gemstones, with a distinctive play of color that makes them highly sought after. For those who own genuine opals, it’s essential to learn how to care for them to ensure their longevity. In this post, we’ll delve into the dos and don’ts of wearing and storing your opal, as well as tips for cleaning and discuss how often you should clean your opal.
Tips For Cleaning:
Cleaning your opal is a crucial part of maintaining its stunning appearance. Dirt and oils can accumulate on the stone, dulling its iridescent hues, so it’s important to clean it occasionally. Here are some tips for cleaning your genuine opal:
- Use a soft cloth to gently wipe the surface of the stone. Avoid rough materials like paper towels or abrasive cloths that can scratch the surface.
- Avoid using harsh chemicals or household cleaners when cleaning your opal. Instead, use only water and mild soap.
- Do not soak your opal in water or any other liquid, as this can damage the stone.
- Remove any jewelry you may be wearing, including other gemstones, before cleaning your opal. Gemstones can scratch or damage each other.
How Often Should You Clean Your Opal?
Cleaning your opal depends on how often you wear it. If you wear it every day, it’s essential to clean it regularly to prevent dirt from building up. It would help if you cleaned it at least once a month if you wear it often.
However, if you wear it less frequently, cleaning it every few months is sufficient.
Dos And Don’Ts Of Wearing And Storing Your Opal:
Opals require specific care when wearing and storing to avoid damaging the stone. Here are some dos and don’ts of wearing and storing your opal:
Dos:
- Store your opal separately from other gemstones to prevent scratches and damage.
- Keep your opal out of direct sunlight to avoid cracking or fading.
- Wear your opal regularly, as the oils from your skin can help keep the stone shiny.
- Store your opal in a clean, dry place when not in use.
Don’Ts:
- Do not wear your opal while swimming or doing other water-related activities, as water can damage the stone.
- Avoid wearing your opal during strenuous activities or heavy lifting, as this can damage the stone.
- Do not expose your opal to extreme temperatures or sudden temperature changes, as this can cause fractures or cracks.
Now that you know how to care for your genuine opal, you can keep it looking stunning for years to come. Remember to clean it regularly, wear and store it appropriately, and handle it with care.
Frequently Asked Questions For How To Tell If Opal Is Real
What Is Opal?
Opal is a precious gemstone that’s formed from silica and contains water.
How Can You Tell If An Opal Is Real?
One way to tell if an opal is real is to check for the presence of color play within the stone. Real opals will display flashes of different colors when viewed from different angles.
How Is Opal Different From Other Gemstones?
Opal is unique among gemstones because of its “play of color” which means the interplay of colors depending on the angle at which it is viewed.
Can Cultured Opals Be Real?
Yes, cultured opals can be real. They are grown in a lab, using similar conditions to those needed in nature to create real opals.
What Should I Do If I Suspect An Opal Is Fake?
If you suspect an opal is fake, take it to a certified gemologist for verification. Do not rely on self-testing kits or online guides which can give misleading results.
Conclusion
Based on the information provided, it is clear that there are many factors that must be taken into consideration in order to determine if an opal is real or not. From its color and shape to its specific gravity and refractive index, every aspect of an opal plays an important role in identifying its authenticity.
While it can be challenging to tell the difference between a real and fake opal, taking the time to learn about the various characteristics and conducting a thorough examination can greatly increase the accuracy of your determination. Remember that not all opals are the same, and it is essential to do your research to ensure that you are accurately identifying the value of your opal.
By following these simple steps and utilizing the tools mentioned, you can confidently identify whether an opal is genuine or not, giving you peace of mind when making a purchase or adding to your collection.