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Understanding Gold Purity: Decoding Karats and PPT for Your Precious Metals

Apr 6, 2025

When it comes to selling your gold, knowing exactly what you’re dealing with is key. In this blog, we break down what karats and ppt mean, how to find these markings on your jewelry and precious metals, and why this information is critical for getting the best offer on your items.

What Are Karats?

Karats are a traditional measure of gold purity used worldwide. They indicate how much pure gold is mixed with other metals (alloys) in your jewelry. Pure gold is 24 karats, which means every one of the 24 parts is gold. However, pure gold is very soft, so it’s often alloyed with other metals for durability. Here’s a quick guide:

  • 24K Gold: Nearly 100% pure (typically 99.9%)

  • 22K Gold: About 91.6% pure (22 parts gold out of 24)

  • 18K Gold: Approximately 75% pure (18 parts gold out of 24)

  • 14K Gold: Roughly 58.3% pure (14 parts gold out of 24)

  • 10K Gold: Around 41.7% pure (10 parts gold out of 24)

Understanding the karat of your gold helps in determining its value, as higher karat numbers usually equate to a higher percentage of pure gold.

What Does PPT Mean?

PPT stands for parts per thousand and is another way to express gold purity. Instead of using a fraction of 24 (as in karats), ppt shows the amount of gold in a piece as a decimal or a three-digit number:

  • 0.999 or 999 ppt means that out of 1,000 parts, 999 parts are pure gold. This indicates 99.9% purity.

This measure is particularly common in bullion and investment-grade gold, ensuring that you know exactly how pure your gold is before you sell it.


How to Find Karats and PPT on Your Jewelry

Most pieces of jewelry and precious metal items come with small markings that indicate their purity. Here’s how you can locate and read these important details:

  1. Check for Hallmarks:
    Look for small stamps or engravings on your jewelry. These are often found in inconspicuous areas such as:

    • The inner band of a ring

    • The back of a pendant or bracelet

    • The underside of a watch or clasp on a chain

  2. Identify the Markings:

    • For Karats: You might see numbers followed by a "K" (e.g., 14K, 18K, 24K).

    • For PPT: Look for a series of numbers like 0.999 or simply 999, which indicate the gold’s purity in parts per thousand.

  3. Use a Magnifying Glass:
    If the markings are too small or faded, a magnifying glass or a smartphone camera with zoom can help capture a clearer image.

  4. Consult a Professional:
    When in doubt, bring your piece to a trusted jeweler who can verify its purity using specialized equipment.

Why Knowing This Information Matters

When you submit your gold for appraisal, knowing its karat or ppt value is essential for several reasons:

  • Accurate Valuation:
    The purity of your gold directly influences its market value. A higher purity piece will generally fetch a better price.

  • Fair Offers:
    Providing the correct information ensures that you receive an accurate cash offer. Our appraisal process relies on these details to determine the true worth of your gold.

  • Transparency and Trust:
    By understanding these markings, you can confidently verify the authenticity of your gold, ensuring that both you and the buyer are on the same page about the item’s quality.

Final Thoughts

Understanding the difference between karats and ppt is not just about numbers—it's about knowing the true value of your gold. This knowledge empowers you to make informed decisions when selling your precious metals. Whether you're a seasoned seller or new to the process, knowing how to read these markings can help you get the best price for your items.

If you’re ever unsure, don’t hesitate to reach out for a free appraisal kit or professional advice. Our 20+ years of precious metal experience mean you can trust us to guide you every step of the way.

Have questions or need further assistance? Contact us today and let our experts help you get the most out of your gold.

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