When it comes to purchasing diamond jewellery, knowledge is power. As entrancing as the sparkle and brilliance of a diamond might be, it’s vital to understand what you’re investing in. Here are six essential facts about diamond jewellery every potential buyer should know before making a decision.

1. The Value of the Four Cs

Every diamond’s value and beauty are determined by the Four Cs: Carat, Cut, Color, and Clarity. These grading standards, set by the Gemological Institute of America (GIA), help define the quality of a diamond.

Carat weight measures the diamond’s size, with one carat equivalent to 200 milligrams. Cut refers to how well the diamond has been carved from its raw form, influencing the stone’s brilliance and fire. Color rates the diamond’s hue on a scale from D (colorless) to Z (noticeable color). Finally, Clarity is the measure of a diamond’s internal and external imperfections.

2. Not All Diamonds Are Naturally Created

In the world of diamond jewellery, not all diamonds come from the earth. Lab-grown diamonds are increasingly popular due to their eco-friendly production and lower price point. They have the same physical, chemical, and optical properties as mined diamonds, and they are also graded using the Four Cs.

3. Diamonds Can Come In Various Colors

Although the classic image of a diamond is a clear, colorless stone, diamonds naturally occur in a spectrum of colors. You can find diamonds in shades of blue, green, yellow, brown, and even black. The rarest of them all are red and blue diamonds. Colored diamonds, also known as fancy-color diamonds, have their own grading scale, and their value can sometimes surpass that of colorless diamonds.

4. Not All Diamond Shapes Are the Same

Diamonds can be cut into various shapes, each with a unique appeal. Round is the most popular diamond shape, known for its maximum brilliance. However, there are many other shapes, such as princess (square), emerald (rectangular with cut corners), oval, marquise (elongated with pointed ends), pear, cushion, heart, and more. The choice of shape is typically a matter of personal preference.

5. Certificates Validate Diamond Quality

A diamond certificate, or a diamond grading report, is an official document issued by a recognized gemological laboratory like the GIA. This certificate provides an unbiased assessment of the diamond’s quality based on the Four Cs. When buying diamond jewellery, always ask for this certificate to ensure you’re getting what you pay for.

6. Care and Maintenance Matter

Diamonds may be the hardest substance known to man, but they still require proper care. Regular cleaning can keep your diamond jewellery sparkling like new. However, it’s recommended to get a professional cleaning once a year to maintain their brilliance.


Understanding these essential facts about diamond jewellery is the first step toward making an informed purchase. Whether you’re buying diamond jewellery as a gift, an investment, or a personal treat, it’s always best to educate yourself on the subject. With this knowledge, you can confidently navigate the dazzling world of diamonds, ensuring that the piece you choose holds its value and beauty for years to come.