About the Diamond Fluorescence

A pure colorless diamond does not contain any compounds, but such a diamond has never been found before. Discovered diamonds are gemstones that have absorbed various chemical compounds over millions of years. The various elements in its composition define the type of diamond. In the process, substances such as nitrogen, boron, and aluminum are sometimes mixed to form crystals, and fluorescence occurs when they react with ultraviolet rays.

Pretty Bright Green Fluorescence            Bright White Fluorescence

Fluorescence is due to the inclusion of these elements, which causes a wonderful glow. Depending on the composition of the gemstone, fancy color diamonds can come in many shades and colors, such as blue, yellow, white, orange, green, and pink. Colorless diamonds typically appear in shades of yellow or blue.
Because diamonds fluoresce at varying levels, the GIA (Gemological Institute of America) uses the following criteria to express the intensity of fluorescence.
– None
– Faint
– Medium
– Strong
– Very Strong
If you don’t have a UV lamp to observe the diamond’s fluorescence, try using a regular black light.

      From left: Light Blue, Medium Blue, Bright Blue, Very Bright Blue

How did it begin?

Diamonds are made up of billions of carbon atoms and most were formed millions of years ago, deep below the earth’s surface under intense heat and high pressure. This absorbed element gave rise to fancy-colored diamonds and fluorescent diamonds.
About 35% of the gemstones on the market today are actually fluorescent, and only about 10% of them are fluorescent enough to change when viewed with ultraviolet light. A diamond’s fluorescence is invisible to the untrained eye unless it is under UV light. Even very strong fluorescence appears very faint in sunlight.
Depending on the color of the gemstone and the color of its sparkle, it sometimes causes a change in the color of the gemstone. For example, a “fancy intense” or “fancy vivid green-yellow” color diamond with a “fairly bright green” fluorescence, when observed under certain lighting Green, which is a rarer color than yellow, shines strongly.

Fancy Color Diamonds and Fluorescence

Fluorescent yellow diamonds are common, but the actual fluorescence is often faint. When buying a yellow diamond, be sure to check the diamond’s fluorescence. Some have a faint fluorescence, others have a slight brownish tinge, or are milky white.
Most pink colored diamonds are fluorescent. Fluorescence is especially common in argyle pink diamonds.
Pure blue diamonds are non-fluorescent. If fluorescence is found, it is usually not noticeable because the diamond is slightly combined with a greenish tint.
Diamonds with red fluorescence are extremely rare, and such rare fluorescence colors are sometimes treated as collector’s items. Any kind of fluorescence is breathtaking when you see it with your own eyes.

Most important of all, we want you to be happy with your diamond purchase. See your diamond under different angles and lighting and read the information on the diamond certificate before purchasing.
The photo below shows the fluorescence of a diamond. Please refer to it.

From left:
① Fancy Deep Brownish Yellow.
②fancy vivid yellow orange.
③fancy vivid yellow orange.
④Fancy Deep Grayish Yellowish Green/Chameleon.
⑤fancy dark gray yellowish green/chameleon.
⑥Fancy Intense Yellow.
⑦fancy pink.
⑧Fancy Greenish yellow.
⑨fancy intense green yellow.
⑩fancy intense green yellow.