How to tell a diamond from a cubic zirconia?
When it comes to distinguishing between a diamond and a cubic zirconia (CZ), there are several key factors to consider. Here are some tips to help you differentiate between the two:
1. **Check for Flaws and Inclusions:** Diamonds often have flaws or inclusions that are not present in cubic zirconia. Use a magnifying glass to examine the stone for any imperfections.
2. **Look for Brilliance:** Diamonds tend to reflect light differently than cubic zirconia. A diamond will sparkle with colorful flashes of light, known as fire, whereas cubic zirconia will typically have a more consistent and uniform sparkle.
3. **Test the Hardness:** Diamonds are one of the hardest substances on Earth, scoring a 10 on the Mohs scale of mineral hardness. Cubic zirconia, on the other hand, is softer and more prone to scratches.
4. **Inspect the Weight:** Diamonds are denser than cubic zirconia, so a diamond of the same size will typically weigh more than a cubic zirconia.
5. **Use a Diamond Tester:** If you have access to a diamond tester, this can be a quick and reliable way to determine whether a stone is a diamond or cubic zirconia.
6. **Check the Setting:** Real diamonds are often set in high-quality metals such as gold or platinum, whereas cubic zirconia may be set in less expensive materials like sterling silver or stainless steel.
7. **Seek Professional Help:** When in doubt, take the stone to a professional jeweler who can use specialized tools and techniques to determine whether it is a diamond or cubic zirconia.
8. **Consider the Price:** While not foolproof, the price of the stone can also be a clue. Diamonds are typically much more expensive than cubic zirconia of similar size and appearance.
9. **Look for Transparency:** Diamonds are known for their high level of transparency, allowing light to pass through easily. Cubic zirconia may appear slightly cloudy or less transparent.
10. **Examine the Cut:** Diamonds are commonly cut with more precision and attention to detail than cubic zirconia, resulting in a higher level of sparkle and brilliance.
11. **Check for Double Refraction:** Diamonds are singly refractive, meaning they only have one refractive index. Cubic zirconia, however, is double refractive, meaning it splits light into two rays.
12. **Consult a Gemological Laboratory:** For a conclusive answer, you can send the stone to a reputable gemological laboratory for professional testing and certification.
Ultimately, it’s important to remember that both diamonds and cubic zirconia are beautiful stones in their own right. Whether you’re looking for a high-end investment piece or a more affordable alternative, knowing how to tell the difference between the two can help you make an informed decision when purchasing jewelry.