The effect of light on the appearance of diamonds

The phrase “as bright as a diamond” can be understood in different ways, depending on the diamond source. In fact, diamonds often exhibit distinct visual effects in sunlight, candlelight, and artificial light sources. This difference demonstrates the importance of understanding the effects of light on the appearance of diamonds.

Everything stems from diamond cutting

Diamond cuts are often confused with shapes, but there is a huge difference between them. The diamond shape refers to the outline or shape of the diamond; the diamond cut refers to the arrangement of the facets. In the diamond quality 4C standard (color, clarity, cut and carat weight), the cut is the most complex and technically difficult "C" in evaluation. Proportion, facet alignment and modification (quality of polishing and symmetry) constitute what we call cut. These aspects are closely related to the ability of the diamond to transmit light and the degree of flicker. It also proves that the quality of the cut is critical to the ultimate aesthetic and value of the diamond.

光线对钻石外观的影响

The faceted arrangement of diamonds is the key to understanding how diamonds interact with light and the surrounding environment. Think of the diamond facet as a series of complex mirrors that reflect the environment. A round, bright, colorless diamond with an amazing 58 facets or “mirrors” that reflect the environment around you, including you.

Each time the diamond moves or as you pass by the diamond, you will see the reflected light from the facet and the reflected light between the facets illuminate each other, creating a dazzling view of the intricate blurring of light and color. The symphony of this reflected light consists of light (the sum of the light reflected by the diamond), fire (the colorful color of the color) and flash (the distribution of the light and dark areas and the flash or flicker when moving the diamond).

Try it yourself: Observe the changes that occur when the diamond is close to or far from the line of sight. In a diffuse lighting environment, there will be different changes, such as fluorescent lights reflected from a white ceiling. Or placed in an environment where the ceiling is dark and only concentrated. Its appearance is even affected by the color and shade of the clothes you wear.

光线对钻石外观的影响

Bare drills with limited spotlight, ranging in size from 2 to 3.03 carats

光线对钻石外观的影响

From left: These diamonds show high, medium and low brightness under diffuse illumination

When buying diamonds, focus on the interaction of the diamond with the light and your personal preference for the distribution of light and dark areas formed by the internal reflection of the diamond. Jewelers are required to show you diamonds under different lighting conditions so that you can compare the different appearance of diamonds under store light, daylight or incandescent light.

Consider the light source that lasts the longest time during your diamond wear and ask to see the diamond under those light sources. For example, if you work in a fluorescent lighting office, ask the merchant to display the diamond in a fluorescent lighting environment until you find the diamond that best matches your flash and light.

After buying a diamond, remember that faceting is like a mirror and needs to be kept clean to get the best effect. Therefore, to ensure that your diamonds will perform optimally under light, be sure to follow these simple diamond cleaning techniques to keep the diamonds clean.

It is a fascinating thing to appreciate the changes in the appearance of diamonds under the influence of the environment. Take the opportunity to go to a variety of different environments to verify which light is best for your diamond.

The quality of the diamond cut and the surrounding environment play an important role in the interaction of light with faceted diamonds. Which environment do you think can boost the brightness of diamonds to the extreme?

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