Charm of Chrysoprase

Ancient chrysoprase, a favorite stone for Greeks and Romans, is most prized among

the many varieties of chalcedony. When worn in jewelry, chrysoprase has often been confused with imperial jadeite, but its deep apple-green color, derived from the occurrence of nickeI, is unique among green stones. It's only when the stone is subjected to much sunlight that fading occurs and allows the chrysoprase to resemble jade. A rare chalcedony, today's chrysoprase comes from Australia, but it has also been mined in California, the UraI Mountains of Russia and parts of Austria.

In its rough form, chrysoprase has an other-worldly quality that seems to cause the stone to glow from within. Unlike most other green stones that depend on chromium or vanadium for their coloration, chrysoprase owes its beauty to compounds of nickel oxide. Irregularskeins of often contained in the stone only serve to intensify its unearthly shading. In Poland's Upper Silesia, chrysoprase was referred to as Frankenstein. It was mined there since the 1300s, but this area faded as a productive source around 1965. Historically, chrysoprase was carved for cameos and set within silver or gold bands. CIassical styles are welI-rendered in chrysoprase, but even simple polished cabochons attached to chording make delightful jewels for contemporary styles.

The renowned jeweler Faberge is known to have a great regard for chrysoprase and used it in some of his most intricately beautiful designs. Europeans of the 18th and 19th centuries also delighted in the stone and used it extensively until it began to grow rare and, consequently quite expensive. In any case, Prussia's Frederick the Great was so taken with chrysoprase that he had furniture and many decorative pieces entirely furnished or adorned with chrysoprase. Queen Anne of England.

Like many stones and gemstones, chrysoprase has interesting lore associated with its ascribed properties. The ancients believed it could enhance fertility and even ward away depression. Its soothing hue was associated with spiritual guidance or protection. Legend maintains that AIexander the Great never won another battle once a snake bit away a chrysoprase stone from his girdle. And while it allegedly offers thieves the power of invisibility.

On the hardness scale, chrysoprase scores seven. It is frequently fashioned into beads that tend to be more affordable than the carved cameos or intaglios of old.