When it comes to buying jewelry, particularly diamond engagement rings or other diamond jewelry, it’s important to be able to distinguish between a real diamond and a cubic zirconia as they can look very similar to the untrained eye. Here are some key ways to differentiate between the two:
1. **The Fog Test:** Real diamonds disperse heat quickly, so if you breathe on a diamond and it clears up immediately, it’s likely real. Cubic zirconia will hold the fog for a few seconds.
2. **The Sparkle Test:** Real diamonds sparkle more intensely than cubic zirconias. Look for the rainbow-like flashes of color, known as “fire,” to help determine if it’s a real diamond.
3. **The Weight Test:** Diamonds are heavier than cubic zirconias. If you have a real diamond and a cubic zirconia of the same size, the diamond will weigh more.
4. **The Brilliance Test:** Diamonds reflect light in a different way than cubic zirconias. Look at how the stone sparkles in various lighting conditions to determine its authenticity.
5. **The Hardness Test:** Diamonds are the hardest stones on earth, so they can scratch other materials easily. If you have a small piece of glass or a ceramic plate, try scratching the stone. If it leaves a mark, it’s likely not a real diamond.
6. **The Setting Test:** Real diamonds are usually set in high-quality metals like platinum or gold, while cubic zirconias are often set in cheaper metals like silver.
7. **The Price Test:** If the price seems too good to be true, it probably is. Real diamonds are valuable gemstones, so be wary of any extremely low prices.
8. **The Refraction Test:** Diamonds have a higher refractive index than cubic zirconias, which means they bend light differently. Hold the stone up to a light source and see how it refracts the light to determine its authenticity.
9. **The Certificate Test:** Always ask for a certificate of authenticity when buying a diamond. Reputable jewelers will provide this document, which includes information about the diamond’s clarity, cut, color, and carat weight.
10. **The Origin Test:** Real diamonds are usually accompanied by a certificate that indicates where the diamond was mined. Knowing the origin of the diamond can help verify its authenticity.
11. **The Sound Test:** Diamonds are known for their ability to make a distinct sound when rubbed against each other. Try gently tapping two stones together and listening for a high-pitched sound, which is a sign of a real diamond.
12. **The UV Light Test:** Some diamonds exhibit fluorescence when exposed to ultraviolet light. If your stone shows a blue glow under UV light, it’s likely a real diamond.
In conclusion, there are several ways to tell a real diamond from a cubic zirconia, including conducting tests for fog, weight, sparkle, brilliance, hardness, setting, price, refraction, certificate, origin, sound, and UV light. By being aware of these key differences, you can ensure that you are getting what you pay for when purchasing diamond jewelry.