Overview of Natural Yellow Diamonds

Natural yellow diamonds, commonly referred to as canary diamonds, belong to the family of fancy-colored diamonds. Their mesmerizing yellow color comes from nitrogen atoms within the diamond’s crystal structure. These atoms absorb blue light and reflect yellow, giving the diamond its characteristic hue. The intensity of the yellow color ranges from faint to deep, and more intense colors are highly prized.

1. Formation and Color Origin

The yellow color in diamonds is the result of nitrogen impurities present during the diamond’s formation. Nitrogen molecules replace some carbon atoms in the diamond’s lattice, which alters the diamond’s light absorption. This causes blue light to be absorbed, making the diamond appear yellow. Unlike pure diamonds, which are colorless, the inclusion of nitrogen results in a broad spectrum of yellow shades ranging from faint to vivid.

2. Rarity and Value

Natural yellow diamonds are relatively rare but not as scarce as other fancy colors like blue or red diamonds. Approximately one out of 10,000 diamonds mined is a natural fancy color diamond, with yellows being among the more common fancy shades [6]. Despite their comparative availability, Fancy Vivid Yellow diamonds can be extremely valuable, especially when they display a strong, even color without brown or green overtones.

3. Color Grading

Yellow diamonds are classified using a specialized grading system:

Fancy Light Yellow

Fancy Yellow

Fancy Intense Yellow

Fancy Vivid Yellow (the most vibrant and valuable)

These color gradings help determine the diamond’s overall value. The more intense the yellow, the more desirable and valuable the diamond.

4. Color Combinations

Natural yellow diamonds can also feature secondary colors, which influence their classification and market value. Common combinations include:

Brown Yellow

Green Yellow

Orange Yellow The presence of these secondary hues can either enhance or diminish the diamond’s appeal depending on the combination and intensity.

5. Sources and Mining

Many yellow diamonds are found in Africa, with significant deposits in South Africa, Sierra Leone, and the Democratic Republic of Congo. The Argyle Mine in Australia, known for its pink diamonds, also produces a limited number of yellow diamonds.

6. Uses in Jewellery

Yellow diamonds are frequently used in high-end jewellery due to their striking color. They are set in rings, earrings, and pendants, often paired with white diamonds for contrast. Fancy Vivid Yellow diamonds, in particular, are often featured as centrepieces in bespoke jewellery creations.

Conclusion

Natural yellow diamonds, with their warm and radiant hue, are a stunning addition to the world of gemstones. Their unique formation process, varying color intensities, and widespread use in luxurious jewellery make them a symbol of elegance and rarity.