Diamond Education

A diamond’s color is normally graded on a scale of D (colorless) to Z (light yellow). However, if the diamond’s color is stronger than a Z rating, then it is considered ‘fancy’ colored. Because fancy color diamonds are more rare than colorless diamonds, they are also more valuable. The rarest, and therefore most expensive, colors …

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The weight of a diamond is normally given in carats. The term carat originated in ancient times when gemstones were weighted against the carob bean. Each bean weighed about one carat. In 1913, carat weight was standardized internationally. One gram is 5 carats, and one ounce is about 142 carats. The weight of small diamonds …

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Fluorescence in a diamond is caused by tiny boron particles ( in technical terms) which glow or emit a blue light (usually) when exposed to UV lighting. In most cases, fluorescence will not cause any noticeable effects to a diamond. However, they may actually make some lower colors (I, J, K, L, etc.) appear to …

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