Understanding Gold Purity: What Do 18K, 21K, 750, and 875 Really Mean?

When it comes to gold jewelry, buyers often see terms like “18K,” “21K,” and numerical codes such as “750” or “875.” While these labels can be confusing, they’re essential in determining the quality and purity of gold. For jewelry enthusiasts, understanding these markings helps ensure that they get what they pay for in terms of quality, authenticity, and durability. This article will break down what these labels mean, why they’re important, and how our factory uses these standards to produce exceptional jewelry.

What Does Karat Mean in Gold?

In gold terminology, a “karat” (abbreviated as K) is the measurement unit that indicates the purity of gold. Pure gold is referred to as 24 karats (24K), and it is a soft, malleable metal with a warm yellow hue. Pure gold, however, is too soft for practical, everyday wear in jewelry. To strengthen it, jewelers mix pure gold with other metals like copper, silver, or palladium, creating what’s known as an alloy. The result is a more durable metal that can withstand daily wear, while still retaining the aesthetic appeal of gold.

To denote the purity of the gold in an alloy, jewelers use karat measurements. The number before the “K” indicates how many parts of gold are present out of a total of 24 parts. This number also corresponds to the percentage of pure gold in the alloy:

• 24K gold: 99.9% pure gold
• 18K gold: 75% pure gold
• 21K gold: 87.5% pure gold

Thus, the higher the karat number, the more gold is present, and generally, the higher the value of the piece.

Breaking Down the Numerical Codes: 750, 875, and Beyond

In addition to the karat system, jewelers and manufacturers also use numerical codes to signify the purity of gold in a piece of jewelry. These codes are often found stamped on the inside of rings or the clasps of necklaces and bracelets.

1. 750 for 18K Gold The “750” marking corresponds to 18K gold, which contains 75% pure gold. Essentially, 750 parts out of 1,000 parts of the alloy are pure gold, with the remaining 250 parts being other metals. This type of gold is popular in high-quality jewelry due to its balanced combination of durability and high gold content. An 18K piece will have a rich golden hue, though it is slightly paler than 24K.
2. 875 for 21K Gold The “875” marking signifies that the alloy is 87.5% pure gold, making it 21K gold. This means that 875 out of 1,000 parts are pure gold. 21K gold is commonly used in countries where people prefer a higher purity of gold in their jewelry, as it offers a deep yellow color with a higher concentration of gold than 18K. However, because it is softer than 18K, 21K gold jewelry may be more prone to scratches or dents, especially when worn daily.
3. Other Common Markings

These numerical stamps are standardized marks regulated by many countries to ensure consumers understand the gold content of their jewelry. Such standards provide transparency, making it easier for buyers to identify and trust the gold content of their purchases.

Why Purity Matters in Gold Jewelry

Understanding the purity of gold is essential when choosing jewelry for several reasons:

• Durability: Lower karat jewelry, such as 14K or 18K gold, is often more durable than 21K or 24K gold due to the added metals in the alloy. This can be crucial for pieces that will be worn regularly, like wedding bands or bracelets.
• Aesthetic Appeal: Higher karat gold, such as 21K, has a rich, deep color that some buyers find highly desirable. However, some people prefer the subtler golden tone of 18K or 14K jewelry, especially for fashion pieces.
• Value and Investment: Higher-karat gold is generally more valuable because it contains a greater percentage of pure gold. If a piece’s value is a primary concern, opting for higher-karat gold can be wise.

Ensuring Quality and Authenticity at FKS Jewelry

At FKS Jewelry, we adhere to these industry standards to deliver jewelry of impeccable quality. Our expertise in replicating the aesthetic appeal of genuine gold and diamond allows us to craft rings that look and feel high-end, ideal for retailers and designers who seek luxurious displays at an affordable price point. By using high-quality metals like stainless steel, brass, and titanium, we can produce rings that closely resemble the 18K and 21K gold look, without the hefty cost of precious metals.

Every ring we produce goes through a meticulous quality check to ensure it meets our high standards in terms of appearance and durability. We pay close attention to the color and finish to achieve an authentic gold look, making our display rings a reliable choice for exhibitions and retail displays.

Customized Design and Reliable Quality

In addition to our high standards for metalwork, we offer a unique customization service, allowing clients to bring their creative designs to life. We collaborate closely with designers to ensure that every piece matches their vision, down to the finest detail. Whether you need a replica of a custom piece or a more classic design, our team at FKS Jewelry is equipped to deliver rings that align with your specifications.

If you’re interested in seeing samples or learning more about our production capabilities, please reach out. We’d be delighted to discuss how our expertise can support your brand's display needs with high-quality, authentic-looking pieces that offer exceptional value.

Contact Rosa!

FKS JEWELRY WEBSITE

FKS JEWELRY INSTAGRAM

Rosa Chow

TEL&Whats app& wechat: +86 185-6503-6320

Email: [email protected]

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