ダイヤモンドのカラーは、ダイヤモンドがどの程度白か無色であるかによってグレード分けされます。. GIA はダイヤモンドを D から Z まで等級付けします。, D が最も無色です, 茶色または黄色味が目立つZ.
ダイヤモンドの価格は通常、これらのグレードを反映しており、場合によっては大幅に反映されます。. ほとんどの場合, the naked eye cannot tell the difference between two adjacent color graded diamonds, though the price difference may be significant.
The most critical aspect with Color is to determine if it appears colorless in relation to its setting. You also want to be certain that a diamond is clear of any tinting that takes away or interferes with white and colored light reflections. The K Color in this Cushion Cut Diamond, 例えば, distracts from the sparkle of the diamond while this I Color Diamond is radiant.
輝き, or sparkle, is created from the way the diamond is cut. It is not advantageous to purchase a diamond that distracts from this important principal characteristic.
As a general recommendation, review each diamond closely and ask for the assistance of an expert. This is the best way to ensure you’re not paying for a feature (つまり. too high of Color grade) that will go unnoticed, or purchasing a diamond that distracts or interferes with light reflection.
注記: Certain colored diamonds are valued stones, like a fancy pink or green diamond. Color grades for these diamonds are distinctly different than traditional “white” diamonds.