Does Ethiopian Opal Turn Yellow?

If you own a piece of Ethiopian opal jewelry or you’re thinking about buying one, ask the same question: Does Ethiopian opal turn yellow?

The simple answer is yes, it can turn yellow. But the reason and detailed explanation are more nuanced than this. 

Yellowing does not happen in every stone, but when it does happen, it usually has a specific reason related to the structure of the gemstone itself. Therefore, understanding it might help you to prevent this gemstone from turning yellow.

So, let’s first begin by understanding why Ethiopian opal can turn yellow.

Why Can Ethiopian Opal Turn Yellow?

Let’s start with clarity. The yellowish tone of the stone is usually not a natural, permanent color change from the gemstone itself. Instead, it often occurs when the stone absorbs external materials.

1. Absorption of Oils

The most common reason for Ethiopian opal turning yellow is oil absorption. Because hydrophane opal is absorbent, it can soak up oils from various sources, such as

• Skin oils

• Cosmetic products

• Hand lotions

• Hair oils

• Jewelry cleaning oils

When opal absorbs oil, the first noticeable change is how light travels through it. As a result, the opal may start appearing yellow, brownish, or slightly cloudy. 

The color change often develops slowly. The stone that once looked bright and mighty will slowly turn yellow due to oil exposure. 

2. Exposure to Moisture

Water itself does not usually cause yellowing, but it can temporarily change the appearance of Ethiopian opal. As said, it absorbs the water easily, and when they do, the stone may:

• Lose its play-of-color temporarily

• Become translucent or muddy

• Change tone slightly

Let’s have a simple understanding of it. Water often evaporates, and when it does, the stone returns to its original color. However, if water contains minerals or impurities, the absorbed substances may remain in the stone, affecting its color. 

3. Environmental Contaminants

Ethiopian opal is also prone to picking up small particles from the environment, such as dirt, dust, or soap particles. Over time, these particles may settle inside the microscopic pores of the gemstone. As a result, the stone may turn yellow or slightly brown. 

This issue is common in jewelry pieces that are worn daily, such as rings and bracelets. 

Is Ethiopian Opal’s Yellow Color Permanent?

Not always. In most cases, the yellow color is caused by water absorption, so keep the opal in a dry environment away from sunlight and heat, allowing the moisture to evaporate naturally.

When water is absorbed, the stone will get back to its original color. The process may take from a few hours to a couple of days, depending on how saturated it becomes.

However, if the yellow color is due to oil absorption, then you might have to call for professional cleaning to restore the original color of the opal. Professional cleaning might not be a guarantee to restore the original color if the stone has absorbed oils deeply for a long period of time. 

The best practice to ensure that Ethiopian opal doesn’t turn yellow is prevention. 

Can Ethiopian Opal Naturally Be Yellow?

Yes, Ethiopian opal can also turn yellow naturally; however, this is a completely different situation. 

Some Ethiopian opals naturally have a honey-yellow or golden body tone. This coloration comes from the gemstone itself rather than external substances. So, if you are buying such a gemstone, then the yellow color is:

• Uniformly distributed

• Part of the natural crystal structure

• Visible from the time the gem is cut

Put simply, such opal has a yellow natural color rather than being caused by water or oil absorption. 

How to Prevent Ethiopian Opal from Turning Yellow?

As said earlier, the best practice to prevent Ethiopian opal from turning yellow is prevention. The prevention of the opal is a simple process:

Avoid Contact with Oils

First and foremost, prevention is to keep it away from oily materials. Therefore, if you use opal jewelry every day, then you remove it when applying lotion, sunscreen, makeup, hair oil, or any other product that may contain oil. 

Oily products are one of the biggest causes of discoloration in hydrophane opals. 

Limit Prolonged Water Exposure

Keeping the opal away from water is nearly impossible if it is placed in a ring. So, the best practice would be to keep it safe from prolonged soaking in water. The occasional contact with water won’t cause any issue. 

You should remove the opal jewelry before getting involved in activities such as swimming, bathing, or washing dishes.

Store Opal Jewelry Carefully

If you have Ethiopian opal jewelry for occasional use, then it is a must to learn about the safe storage options to maintain it for a longer period. 

The best storage options for Ethiopian opal jewelry are:

• Soft jewelry pouch

• Away from humidity

• Separate from heavily oiled gemstones

Put simply, you should have a clean and dry storage box to ensure the chances of contaminants entering the stone. 

Should Yellowing Stop You from Buying Ethiopian Opal?

No, discoloration should not stop you from buying Ethiopian opal. In other words, it is an opal that asks for awareness from its owner. 

You should understand how to care for this opal to ensure it maintains its original color. 

In addition, Ethiopian opals have only been commercially available since the 1990s, so it is available easily in the market. 

Final Take

So, does Ethiopian opal turn yellow?

Yes, it can but usually for a specific reason. The hydrophane nature of many Ethiopian opals allows them to absorb oils, moisture, or environmental particles, which can sometimes give the stone a yellowish appearance. In many cases this change is temporary or preventable.

With mindful handling, proper storage, and minimal exposure to oils, Ethiopian opals can retain their brilliant play-of-color and natural beauty for a long time.

And honestly, that shimmering dance of colors is exactly why people fall in love with these stones in the first place.