Jewelry Blog

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The Color scale’s grade definitions:

D color: This grade refers to an “absolutely colorless” diamond and is the highest color grade given only to exceptionally rare diamonds. Due to color being a natural element of the diamond and the rarity in finding such stones the value of D color stones are very high.

E color: This is considered a “colorless” grade where only minute traces of color can be detected by an expert gemologist.

F color: This is the last of what is considered a “colorless” grade of diamond, where slight color can be detected by an expert gemologist.

G color: This is the highest of the “near-colorless” grades. To the naked eye, color may be noticeable if compared to diamonds of finer grades but otherwise will be very hard to notice. This grade of diamond offers excellent value and looks beautiful.

H color: This is also of the “near-colorless” grade diamond. Color is noticeable only when compared to diamonds of better grades. A diamond of an H color grade looks beautiful, and offers an excellent value.

I color: This is also of the “near-colorless” grades but lower than that of an H grade. Color may be slightly detectable upon close examination by the naked eye. This color grade offers an excellent diamond value.

J color: This is the last of the “near-colorless” grades. The color is slightly detectable to the unaided eye, but this grade of diamond still looks beautiful and offers an very high diamond value.

K-M color: This grade range describes “faintly tinted” grade diamonds, usually yellow and noticeable to the naked eye. Shimmer & Stone does not carry or suggest these grades for fine jewelry.

N-R color: This grade range describes “lightly tinted” diamonds, usually yellow and distractingly noticeable to the naked eye making them unattractive – Shimmer & Stone does not carry or suggest these grades for fine jewelry.

S-Z color: This grade range describes “inferior grades” that have very noticeable tinted hues, usually yellow and may progress to brownish. Tint is very visible to the naked eye, even when mounted – Shimmer & Stone does not carry or suggest these these grades of diamond for fine jewelry.