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Introduction to loose natural diamonds

About Diamantwerp

At Diamantwerp we are passionate about the brilliance and beauty of diamonds. With over 35 years of experience in the diamond industry, we offer only the highest quality and fair trade.

What Are Loose Natural Diamonds?

Loose natural diamonds are diamonds that have been mined, cut, and polished but are not yet set into jewelry. These diamonds are sold individually and can be used to create custom pieces of jewelry, such as engagement rings, earrings, or necklaces. Unlike pre-set diamonds, loose diamonds offer buyers the flexibility to choose the exact specifications they desire, ensuring a personalized and unique piece of jewelry.

Benefits of Buying Loose Diamonds

  1. Customization: One of the primary benefits of purchasing loose diamonds is the ability to customize your jewelry. You can select the diamond’s cut, color, clarity, and carat weight to match your personal preferences and budget. This level of customization is not possible with pre-set jewelry.

  2. Quality Assurance: When buying loose diamonds, you can thoroughly inspect the diamond before it is set. This allows you to verify the quality and authenticity of the diamond, ensuring you get exactly what you pay for.

  3. Better Value: Loose diamonds can often be more cost-effective than pre-set diamonds. By purchasing a loose diamond and having it set separately, you can avoid the additional markups that come with pre-set jewelry.

  4. Investment Potential: Loose diamonds can be a good investment. They retain their value over time and can be easily sold or traded if needed. Additionally, high-quality diamonds can appreciate in value, making them a smart financial choice.

How to Choose the Right Diamond

Choosing the right diamond involves understanding the 4 Cs: Cut, Color, Clarity, and Carat weight. Each of these factors plays a crucial role in determining the diamond’s overall appearance and value.

  1. Cut: The cut of a diamond refers to how well it has been shaped and faceted. A well-cut diamond will reflect light beautifully, creating a dazzling sparkle. The cut is often considered the most important of the 4 Cs because it has the greatest impact on a diamond’s brilliance.

  2. Color: Diamonds come in a range of colors, from completely colorless to various shades of yellow and brown. The Gemological Institute of America (GIA) grades diamond color on a scale from D (colorless) to Z (light yellow or brown). Colorless diamonds are the most valuable, but slight color variations can be a matter of personal preference.

  3. Clarity: Clarity refers to the presence of internal or external imperfections, known as inclusions and blemishes, respectively. The GIA grades clarity on a scale from Flawless (no inclusions or blemishes visible under 10x magnification) to Included (inclusions and/or blemishes visible to the naked eye). Higher clarity grades are more valuable, but many inclusions are not visible without magnification.

  4. Carat Weight: Carat weight measures the size of the diamond. One carat is equivalent to 200 milligrams. Larger diamonds are rarer and therefore more valuable, but carat weight should be considered alongside the other Cs to ensure a balanced and beautiful diamond.

Understanding Diamond Grading Reports

A diamond grading report, also known as a diamond certificate, is an official document that provides detailed information about a diamond’s characteristics. These reports are issued by independent gemological laboratories, such as the GIA, and include information on the diamond’s cut, color, clarity, and carat weight.

When purchasing a loose diamond, it is essential to request a grading report to verify the diamond’s quality and authenticity. The report will also include a unique identification number that can be used to track the diamond’s history and provenance.

Tips for Buying Loose Diamonds Online

  1. Research Reputable Sellers: Ensure you are buying from a reputable and trustworthy seller. Look for reviews and ratings from previous customers, and check if the seller is a member of any professional organizations, such as the Jewelers of America or the American Gem Society.

  2. Request Certification: Always request a diamond grading report from a recognized gemological laboratory. This will provide you with an unbiased assessment of the diamond’s quality.

  3. Understand Return Policies: Make sure you understand the seller’s return policy before making a purchase. This will give you peace of mind in case the diamond does not meet your expectations.

  4. Compare Prices: Shop around and compare prices from different sellers to ensure you are getting the best value for your money. Keep in mind that significant price differences may indicate differences in quality.

  5. Ask Questions: Don’t hesitate to ask the seller questions about the diamond’s characteristics, certification, and history. A reputable seller will be happy to provide you with all the information you need.

Common Mistakes to Avoid

  1. Focusing Solely on Carat Weight: While carat weight is important, it should not be the only factor you consider. A smaller diamond with a better cut, color, and clarity can be more beautiful and valuable than a larger diamond with lower quality characteristics.

  2. Ignoring Certification: Never purchase a diamond without a grading report from a recognized gemological laboratory. Certification ensures you are getting a genuine and accurately graded diamond.

  3. Overlooking the Setting: The setting can significantly impact the appearance of the diamond. Make sure to choose a setting that complements the diamond and enhances its beauty.

  4. Not Considering Future Needs: Think about how the diamond will be used in the future. If you plan to upgrade or reset the diamond, choose a versatile shape and size that will work well in different settings.

Importance of Certification

Certification is crucial when buying loose diamonds. A diamond grading report provides an unbiased assessment of the diamond’s quality and ensures you are getting a genuine and accurately graded diamond. The most reputable gemological laboratories include the GIA, the American Gem Society (AGS), and the International Gemological Institute (IGI).

How to Read a Diamond Certificate

A diamond certificate includes detailed information about the diamond’s characteristics, including:

  • Cut Grade: The quality of the diamond’s cut, ranging from Excellent to Poor.
  • Color Grade: The diamond’s color, graded from D (colorless) to Z (light yellow or brown).
  • Clarity Grade: The presence of inclusions and blemishes, graded from Flawless to Included.
  • Carat Weight: The size of the diamond, measured in carats.
  • Measurements: The diamond’s dimensions, including its diameter, depth, and table size.
  • Proportions: The diamond’s proportions, including the depth percentage and table percentage.
  • Polish and Symmetry: The quality of the diamond’s polish and symmetry, graded from Excellent to Poor.

Understanding these characteristics will help you make an informed decision when purchasing a loose diamond.

Call to Action

Ready to find your perfect diamond? Explore our extensive collection of loose natural diamonds at diamantwerp.be. Whether you’re looking for an engagement ring, a special gift, or an investment piece, our expert team is here to help you every step of the way. Contact us today to schedule a consultation and start your journey towards owning a beautiful and unique diamond.


This blog post provides a comprehensive introduction to loose natural diamonds, covering essential topics such as the benefits of buying loose diamonds, how to choose the right diamond, and the importance of certification. By following the tips and guidelines outlined in this post, readers will be well-equipped to make informed decisions when purchasing loose diamonds.