How to Identify Real Opals

Opals are a stunning and distinctive gemstone, but it can be quite challenging to determine their authenticity. With numerous imitations and counterfeits available in the market, it can be difficult to tell if you're purchasing a genuine opal. This article will provide some helpful tips and techniques to help you identify real opals.

1. Look for Play of Color - The most important characteristic of a real opal is its play of color. This refers to the flashes of different colors that can be seen when the opal is viewed from different angles. A real opal will have a vivid play of color that appears to come from within the stone. If the colors appear to be on the surface of the stone, it is likely a fake.

2. Check for Opacity - The level of transparency in genuine opals can differ. While some opals may be transparent, others may be more opaque. Nonetheless, all authentic opals must exhibit a distinctive play of color, irrespective of their level of opacity. If an opal appears entirely opaque or has a milky white color, it's probably a fake.

3. Examine the Surface - Authentic opals should have a polished and smooth surface. If the surface is rough or shows visible scratches or marks, it could be an indication of a fake. Moreover, if the surface seems to be coated or painted, it's not a genuine opal.

4. Test the Hardness - Opals are relatively soft gemstones, with a hardness of around 5.5 to 6.5 on the Mohs scale. This means that they can be easily scratched or damaged if not handled with care. You can test the hardness of an opal by using a sharp object, such as a knife or pin, to see if it leaves a mark on the surface. If it does, it is likely not a real opal.

5. Consider the Source - Lastly, it's crucial to take into account the origin of the opal. Typically, genuine opals are mined in countries like Australia, Ethiopia, and Mexico, among other locations. If the opal is from a reliable source and is accompanied by a certificate of authenticity, it's more probable that it's a genuine opal.

In conclusion, identifying real opals can be a challenge, but by paying attention to the play of color, opacity, surface, hardness, and source, you can increase your chances of finding a genuine gemstone. If you are unsure about the authenticity of an opal, it is always best to consult with a professional gemologist or jeweler.