My Blog

Jadeite and nephrite are minerals that form through metamorphism. They are mostly found in metamorphic rocks associated with subduction zones. This places most jadeite and nephrite deposits along the margins of current or geologically ancient convergent plate boundaries involving oceanic lithosphere. Jadeite is typically found in rocks that have a higher pressure origin than nephrite. This normally…

Most people immediately think of China as the source of jade and jade objects. China has always been an important producer of jade, a leading jade cutting center, jade consumer, and jade market. The only time dominance in these activities moved outside of China was between World War II and the early 1980s. At that…

A number of other minerals and materials that are commonly cut and polished are easily confused with jade. All of these materials can have a color, luster, and translucence that is very similar to jade – so similar that the average person is unable to recognize them. These materials are often used to manufacture cabochons,…

Jade is a durable, colorful material that can be worked into shapes and given a high polish. These properties make it a very desirable gemstone. Jade has been used to make a variety of jewelry items such as pendants, necklaces, rings, bracelets, earrings, beads, cabochons, tumbled stones, and other items. These jewelry items are often made of…

People have used jade for at least 100,000 years. The earliest objects made from jade were tools. Jade is a very hard material and is used as a tool because it is extremely tough and breaks to form sharp edges. Most jade does not have a color and translucence that is expected in a gemstone.…

A “misnomer” is an incorrect name. In the gemstone trade many misnomers have been given to materials that look like a more popular or more valuable material even though that name is incorrect. The use of a misnomer can be innocent or derogatory, but the intent is often to associate a product with one that…

For thousands of years, the people who manufacture and sell jade objects have found many ways to improve their appearance. Heat, wax, dye, bleach, acid, polymer injection and other treatments have all been used to improve the color, luster and stability of jadeite and nephrite. Although many of these treatments are part of traditional jade…

Chinese craftsmen have been producing jade objects for over 5,000 years. A few hundred years ago, master Chinese craftsmen who worked with jade daily recognized that some of the jade obtained from Burma (now the Union of Myanmar) was different. It was harder, denser, worked more easily, and produced a higher luster upon polishing. It gradually became…

Jadeite and nephrite have distinctly different mineral compositions. Jadeite is an aluminum-rich pyroxene, while nephrite is a magnesium-rich amphibole. However, the two minerals have very similar physical properties in the eye of the average person. Only trained observers with significant experience are able to reliably differentiate them without mineral testing equipment. This is why jadeite and…

Originally, all jade objects were thought to be made from the same material. However, in 1863 a Frenchman, Alexis Damour, discovered that the material known as “jade” could be divided into two different minerals: jadeite and nephrite. Because these two materials can be difficult to distinguish, and because the word “jade” is so entrenched in common…