Ten Nerdy Facts About Chrysoprase

Chrysoprase comes in a range of green coloration, from a  delicate apple-green to a deeper green. The majority of green stones get their hue from chromium, but chrysoprase gets its color from the presence of nickel. Some specimens are closer to a yellow green color than others.

 As with many other gemstones, long periods of exposure to heat or direct light can leach the color.

 Archeologists uncovered an ancient Egyptian chrysoprase necklace of beads dated to 1500 BC. Ancient Greek and Roman archeological sites contained chrysoprase figurines, seals, and cameos as well.

Chrysoprase uses date back at least 3,500 years, making it one of the oldest semi-precious gemstones known to mankind.

The gem became popular in Europe in the 1700s when it was discovered in Poland.

Avoid ultrasonics and steam cleaners. Use a soft, damp cloth to clean. Chrysoprase is porous so it’s possible that it could soak up water or chemicals.

Chrysoprase is a variety of chalcedony, a type of quartz.

It is a 6.5-7 on the Mohs hardness scale.

Most chrysoprase comes from Australia and Tanzania, with Australia accounting for about 85% of all chrysoprase produced.

Buyers need to be aware of the fact that ordinary chalcedony and agate are dyed green in an attempt to simulate chrysoprase.