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Hunter

Jager

When the so-called “Old Terms” for classifying the color of diamonds were introduced in the USA at the beginning of the 20th century, the term Jager referred to the highest quality.

The Jagersfontein Mine as namesake for the expression Jager

The name Jager is derived from the Jagersfontein Mine in South Africa, which was opened in 1888. The diamonds found there were characterized by a very pure, white color with a blue shimmer - "Finest blue white" is therefore an alternative name for Jager.

The mine where the Jager diamonds come from also produced the Excelsior diamond and the Golden Jubilee diamond , which are among the largest and most famous diamonds in the world. In total, 9.6 million carats of diamonds were found in the Jager mine, which closed in 1971.

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Replacement of Jager by River

As early as 1930, the term Jager was removed from the top of the color scale and replaced by River . It had been recognized that the bluish color of Jager diamonds was only due to fluorescence; this is the name given to the effect that gemstones exhibit when exposed to UV radiation - they shine in certain colors. With this effect, the Jager diamond shines in a blue color and can only be seen in daylight - but not in artificial light, since only natural light contains ultraviolet radiation. This is therefore not an inherent bluish color of the stone.

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