Jadeite

La jadeite is one of two mineralogical varieties of jade, the other being nephrite. This precious mineral is particularly prized in the luxury jewellery for its beauty and exceptional properties. Jadeite is composed of sodium and aluminium silicate, and is distinguished by its hardness and vibrant range of colours, from emerald green to milky white, lavender, red and yellow.

Origin and history of jadeite

Jadeite has a rich history dating back several millennia. Used since Neolithic times, it was particularly prized by the pre-Columbian civilisations of Central and South America, as well as by the Chinese dynasties. Jadeite is often associated with profound spiritual and cultural beliefs, symbolising purity, serenity and longevity.

Characteristics of jadeite

Jadeite is renowned for its hardness, measuring between 6.5 and 7 on the Mohs scale. This characteristic makes it ideal for creating luxury jewellery that last over time. In terms of composition, jadeite is a pyroxene mineral rich in sodium and aluminium. Its fine, compact crystalline structure gives it a smooth, translucent texture, accentuating its brilliance and depth of colour.

Colours of jadeite

Jadeite's most sought-after colour is emerald green, known as "imperial jade". However, jadeite comes in a multitude of shades. The colours vary according to the chemical composition and impurities present in the mineral. For example, the presence of chromium gives jadeite its green colour, while iron can produce red or yellow hues. The rarest and most precious grades are often those with an intense, uniform colour, with no visible inclusions.

Use of jadeite in luxury jewellery

In the field of luxury jewelleryJadeite is used to create unique and sumptuous pieces, such as necklaces, bracelets, earrings and rings. Its rarity and beauty make it a favourite choice of jewellers and collectors. Jadeite jewellery is often combined with precious metals such as gold and platinum, further enhancing its value and appeal.

How do I care for jadeite jewellery?

To preserve the beauty and sparkle of jadeite jewellery, it is important to look after it properly. Avoid exposure to harsh chemicals and clean with a soft cloth and lukewarm water. It is also advisable to store jadeite jewellery separately to avoid scratches and damage.

Frequently asked questions about jadeite

What is the difference between jadeite and nephrite?

The main difference between jadeite and nephrite lies in their chemical composition and crystal structure. Jadeite is a sodium aluminium silicate, while nephrite is a calcium magnesium silicate. Jadeite is generally harder and rarer than nephrite, which makes it more valuable.

How do you recognise quality jadeite?

To recognise a jadeite quality, you need to look at its colour, texture and transparency. High-quality jadeite will have a bright, uniform colour, a smooth texture with no visible inclusions and a certain transparency that allows light to pass through. It is also advisable to consult an expert or gemologist for a precise assessment.

Where is jadeite found?

The main sources of jadeite are found in Burma (Myanmar), which is the most prized source of imperial jadeite. However, jadeite deposits can also be found in Guatemala, Japan, Kazakhstan and Russia.

Is jadeite more precious than jade?

In reality, the term jade encompasses two distinct minerals: jadeite and nephrite. Jadeite is generally more valuable than nephrite because of its rarity, hardness and variety of colours. Imperial jade, a variety of intense green jadeite, is particularly prized and expensive.