GIA Diamond Color Scale

The Gemological Institute of America (GIA) is the most widely recognised authority on diamond grading. The GIA diamond color scale is used to grade diamonds from D (colorless) to Z (light yellow or light brown). Here is a breakdown of the GIA diamond color scale:

• D: Absolutely colorless (Highest quality)

• E–F: Colorless (Very high quality)

• G–H: Near-colorless (Slight traces of warmth)

• I–J: Faint yellow or brown tint

• K–M: Very light yellow or brown tint

• N–R: Light yellow or brown

• S–Z: Noticeable yellow or brown (Lowest on standard scale)

It’s worth noting that the color of a diamond is not the same even though different platforms showcase a similar jewellery piece. These colors are hard to distinguish from a naked eye. And thus, we recommend asking your jeweler to give you all the details related to the diamond color and clarity before making a purchase 

Onya uses 100% VVS clarity D-E-F color lab-grown diamonds for all its jewellery. 
When comparing prices online for different jewellery. Always check to compare with same clarity, color and carat of diamond. 

Summary

A summary to always remember while purchasing any diamond jewellery:
D-E-F >> G-H-I-J >> K-L-M >> N-R-S-Z