What is the color range of diamonds from colorless to light yellow and light brown, also called the D-to-Z range?

What is the color range of diamonds from colorless to light yellow and light brown, also called the D-to-Z range?

• A. D-to-Z range
• B. Open-pit mining
• C. Old European cut
• D. Normal color range

Answer: (D)

Understanding diamond color grading starts with recognizing a spectrum from colorless to tinted. The range from colorless through near-colorless to light yellow or light brown is defined as the D-to-Z range. This naming is the standard way labs describe the broad color spectrum a diamond may exhibit, with D being colorless and Z representing the lightest yellow/brown tint. The other terms don’t describe this color spectrum: open-pit mining is a mining method, Old European cut is a historical diamond cut, and normal color range isn’t a recognized grading term. So, the correct designation for that color range is the D-to-Z range.

Understanding diamond color grading starts with recognizing a spectrum from colorless to tinted. The range from colorless through near-colorless to light yellow or light brown is defined as the D-to-Z range. This naming is the standard way labs describe the broad color spectrum a diamond may exhibit, with D being colorless and Z representing the lightest yellow/brown tint. The other terms don’t describe this color spectrum: open-pit mining is a mining method, Old European cut is a historical diamond cut, and normal color range isn’t a recognized grading term. So, the correct designation for that color range is the D-to-Z range.