Understanding Your Diamond Grading Report: A Comprehensive Guide

Reading a diamond grading report can seem overwhelming at first, but with a little knowledge, you can easily interpret the details. Here are some essential elements to look for when reviewing a diamond grading report:

1. Diamond Information

The report begins with basic details about the diamond, including its shape, weight, measurements, and certificate number. It will also specify if the diamond has undergone any treatments. Look for the key statement: Natural Diamond—this indicates the diamond’s authenticity.

2. Cut Grade

This section evaluates the diamond’s cut quality, which significantly influences its brilliance and fire. Cut grades range from Excellent to Poor, with Excellent representing the highest quality.

3. Colour Grade

Diamonds are graded on a scale from D (colourless) to Z (light yellow or brown). The report will specify the diamond’s colour grade, which directly affects its value.

4. Clarity Grade

Clarity refers to the presence of blemishes or inclusions within the diamond. Grades range from Flawless (no inclusions visible under 10x magnification) to Included (inclusions visible to the naked eye). Understanding clarity is crucial, as it influences the diamond’s overall appearance and value.

5. Carat Weight

The carat weight indicates the size of the diamond, with larger diamonds generally being more valuable. This information is clearly listed in the report.

6. Proportions

Look for details about the diamond’s proportions, including depth and table percentages. These scientifically proven angles affect light performance and overall appearance, influencing the diamond’s brilliance.

7. Symmetry and Polish

These sections assess the diamond’s symmetry (the balance of its facets) and polish (the quality of its surface finish). Both factors impact the diamond’s beauty and value.

8. Fluorescence

Some diamonds exhibit fluorescence, which causes them to glow under certain lighting conditions. The report will indicate the presence and strength of any fluorescence, typically blue. While fluorescence often has no significant impact on value, it is worth noting, as it can be visible under ultraviolet (black) light.

Gaining Confidence in Reading Your Report

By familiarizing yourself with these key elements, you can confidently read and interpret a diamond grading report. If you find the information daunting or need further clarification, DCLA experts are available to provide guidance and explain what to look for.

Need Help Understanding Your Diamond Grading Report?

Contact DCLA today for expert advice and insights to ensure you’re making informed decisions about your diamond.