Yellow Diamond Colour Grades

Cutters and dealers never consider a color or grade to be valid unless it was issued by gia.

Yellow diamond colour grades. Gia is considered the only acceptable lab report for yellow diamonds. Yellow is diamond s second most common fancy color. The hue of a yellow diamonds can have different color appearances depending on its tone and saturation as seen in this chart which shows diamonds in the warmer hue range. All other factors being equal the most valuable diamonds are those with the least color appearing white to the eye.

The one on the left is set on a pavé ring setting and the one on the right is set on a three stone ring. Same goes for grading yellow diamonds. And the difference between an h color and a k color is three color grades. Just have a look at the diamond rings below.

Fluorescence is a wildcard in yellow diamonds of any intensity. The vast majority of untrained observers and many gemologists cannot distinguish a color grade from the one just above or below unless the diamonds are compared side by side in a. The way we approach the 4cs we separate cut and carat weight from color and clarity. The diamonds with the least color get a grade of d while stones with more yellow or brown color receive grades further down the alphabet.

When grading colored diamonds beside determining the color or color combination of the diamond the color is also graded for intensity. When buying a diamond does the color grade matter. Consumers should follow this rule as well. A k colored diamond on a yellow gold ring will always look good on yellow gold.

There are yellow diamonds with a very strong color and there are yellow diamonds that the yellow shade is quite weak yellowish or even just a yellow tint. What is known as the normal color range diamonds of more intense color usually yellow but in some cases red green or blue are termed fancy color diamonds black diamonds are also fancy color diamonds. The ftc provides no guidelines for the use of the term fancy color in the us but there is general agreement in the international trade about what diamond color range is customary for fancy color diamonds. When a diamond has enough yellow or brown or if it has any other tint at all it s graded as a fancy color diamond.

Yellow diamonds are sometimes marketed as canary while this isn t a proper grading term it s commonly used in the trade to describe fancy yellow diamonds. These are either yellow or brown diamonds that have more color than a z master stone or they exhibit a color other than yellow or brown. Until the late 1990s there was not much demand for black diamonds. They both contain k colored diamonds.

How does fluorescence affect yellow diamonds. Yellow diamonds are less common than the colorless to light yellow diamonds associated with the d to z color grading scale but far more common than blue pink and red diamonds. Yellow gold makes slight amounts of yellow in a diamond less obvious while white gold or platinum mountings make the color in yellow diamonds more apparent.