The
color yellow brings a feeling of warmth and of staring at the sunrise.
GIA Grades for Yellow Diamonds
GIA classifies
yellow diamonds into four categories. In increasing order of intensity, they are:
While other grading labs make use of similar terms, there are slight differences, like the omission of the term “vivid” by HRD lab. If a
diamond has a higher depth of color than Z, it normally falls under fancy colored yellow. Canary
diamonds are the most priced among
yellow diamonds.
The
yellow color comes from the presence of nitrogen in the
stone. During
formation, some of the carbon atoms are replaced by nitrogen, and this eventually creates a difference in how the stone interacts with light; it takes in the blue and violet parts of the incident spectrum and lets out the
yellow part. It only takes very little nitrogen to cause significant coloration in the
stone, which is why
yellow diamonds are fairly common, as you would know if you ever tried buying a
1-carat yellow diamond ring.
The color yellow brings a feeling of warmth and of staring at the sunrise.
GIA Grades for Yellow Diamonds
GIA classifies yellow diamonds into four categories. In increasing order of intensity, they are:
While other grading labs make use of similar terms, there are slight differences, like the omission of the term “vivid” by HRD lab. If a diamond has a higher depth of color than Z, it normally falls under fancy colored yellow. Canary diamonds are the most priced among yellow diamonds.
The yellow color comes from the presence of nitrogen in the stone. During 
formation, some of the carbon atoms are replaced by nitrogen, and this eventually creates a difference in how the stone interacts with light; it takes in the blue and violet parts of the incident spectrum and lets out the yellow part. It only takes very little nitrogen to cause significant coloration in the stone, which is why yellow diamonds are fairly common, as you would know if you ever tried buying a 1-carat yellow diamond ring.
