Gold Purity and Colour

Gold has enchanted humanity for centuries, its brilliance and value standing as symbols of wealth, beauty, and timeless allure. But behind each gold piece lies a world of detail that affects its quality, appearance, and suitability for different uses. Understanding gold purity and colour is essential when choosing jewelry that matches your style, budget, and lifestyle.


What is Gold Purity and How is it Measured?

Gold purity refers to the proportion of pure gold in a piece of metal. Since pure gold is too soft for practical use, it is often mixed with other metals (alloys) to enhance its durability. Gold purity is typically measured in karats, represented by "K" or "Kt," with 24 karats (24K) being pure gold.

Here’s how gold purity is calculated and categorized:

  • 24K Gold (999): 99.9% pure gold, soft and prone to damage, often used for coins or investment purposes.
  • 18K Gold (750): 75% gold and 25% other alloys like silver or copper. It strikes a balance between purity and strength, making it ideal for high-end jewelry.
  • 14K Gold (585): 58.3% gold, mixed with durable alloys. It is popular for everyday wear due to its resilience.
  • 10K Gold: 41.7% gold, affordable and highly durable, but with less of the rich gold hue found in higher karats.

Purity can also be expressed as fineness, representing gold content in parts per thousand. For example, 24K gold has a fineness of 999, while 18K gold is marked 750, and 14K - 585.


How is Gold Purity Tested?

Gold purity is verified using methods such as:

  • Acid Tests: Applying acid to a gold surface to observe reactions.
  • Electronic Testing Devices: Using machines to measure conductivity.
  • X-Ray Fluorescence (XRF): A non-invasive method for precise results, often used in professional settings.


The Significance of Hallmarking in Lithuania

Lithuania has strict regulations governing the quality and authenticity of precious metals. The hallmarking system ensures that every piece of gold jewelry meets the required purity standards.

The Role of the Lithuanian Assay Office

The Lithuanian Assay Office, officially recognized under the Hallmarking Convention since 2004, is responsible for testing and certifying the purity of precious metals. Each approved gold item receives an official hallmark, serving as proof of its gold content and compliance with both Lithuanian and international standards.

At One Mo Diamond, every jewelry piece we sell is thoroughly checked and certified by the Lithuanian Assay Office. This means that when you shop with us, you can rest assured that your jewelry meets the highest standards of authenticity and quality. The hallmark on every piece is a trusted symbol of compliance, giving you complete confidence in your purchase.


Gold Colors and Their Compositions

Gold isn’t always yellow. Various alloys create different hues, each with its unique charm and character. Here’s a closer look at the three most popular gold colors:


Yellow Gold

Yellow gold is the natural color of gold, made by mixing gold with small amounts of copper and silver. Its warm hue gives it a classic and timeless appeal.

  • Popular for: Traditional and vintage-inspired jewelry.
  • Advantages: Low maintenance, hypoallergenic, and retains its color over time.


White Gold

White gold is crafted by blending gold with white metals like nickel, silver, or palladium. It is often coated with rhodium for enhanced durability and brilliance.

  • Popular for: Contemporary styles and diamond settings.
  • Advantages: Modern appearance, pairs well with all gemstones, and is scratch-resistant.
  • Care Tip: Rhodium plating wears off over time and may need reapplication to maintain its shiny finish.


Rose Gold

Rose gold achieves its romantic pink hue by mixing gold with copper. Its blush tones make it a versatile and trendy choice.

  • Popular for: Vintage-style pieces and engagement rings.
  • Advantages: Unique color, affordable, and complements most skin tones.


Explore Fine Gold Jewelry Today

Gold’s beauty is as diverse as the people who wear it. Whether you’re drawn to the warmth of yellow gold, the modern brilliance of white gold, or the romantic charm of rose gold, understanding gold purity and colors helps you make informed choices.

At One Mo Diamond, we pride ourselves on offering gold jewelry that is not only beautiful but also certified to the highest standards. Every piece has been inspected and hallmarked by the Lithuanian Assay Office, ensuring authenticity and compliance with both Lithuanian and international regulations.

Shop Now to find your next cherished piece of jewelry!


FAQ

What Does 585 or 750 Mean on Gold Jewelry?

These numbers are hallmarks indicating purity. "585" means 58.5% pure gold (14K), while "750" means 75% pure gold (18K).

Which Gold Color is the Most Durable?

White gold is the most durable due to the added alloys and rhodium coating.

Why Does White Gold Lose Its Shine?

The rhodium plating on white gold wears down over time but can be reapplied to restore its brilliance.

Is Higher-Karat Gold Always Better?

Not necessarily. Higher-karat gold is more prestigious but also softer, making it less suitable for everyday wear.

What is the Ideal Gold for Engagement Rings?

14K or 18K gold are perfect for engagement rings, offering a balance between durability and elegance.