Jadeite is a pyroxene mineral with composition NaAlSi₂O₆. It is monoclinic. It has a Mohs hardness of about 6.5 to 7.0 depending on the composition. The mineral is dense, with a specific gravity of about 3.4.
Jadeite, one of two distinct minerals commonly known as jade, jadeite is the rarer and harder variety. Rich emerald-green jadeite, known as “imperial jade,” is also the most highly valued. However, durable jadeite can be found in many colors and is well-suited for both intricate carvings and cabochons.
Thanks partially to Chinese demand, rare imperial green jade, a translucent stone that’s been compared to fine emerald, is the most expensive gem in the world, worth more per gram than diamonds. Jade was also one of the most important materials in the rituals of Mesoamerican peoples such as the Olmec and Maya.
If it feels heavier than most stone pieces of the same size, it is more likely to be authentic jade. Another way to judge density is to observe the sound of plastic beads gently tapping each other. If you have a piece of real jade, clink it against the stone in question.
Jadeite is the term used to differentiate the high-quality jade suitable for use in jewellery from the lower quality jade used in larger decorative pieces.
Real jade can be pricey, especially if it’s jadeite, the rarer, more valuable form of jade. Jadeite is one of the two mineral species that can be classified as jade: the other is nephrite, a much more common and less valuable mineral. Jade that comes from outside these places is probably nephrite.
Jadeite Jade Quality Factors. Jadeite comes in a wide range of colors. The most valuable is an intense green called Imperial.
Hold the piece of jade in your hand. It should feel “cold, smooth and soap like to the touch”. It should take a while to get warm if it is real. However, this is very subjective, and most helpful when you can compare it to real jade of a similar shape and size.
Here are some pictures of the Jadeite when minned:
Here are some pictures of the Jadeite in jewellery: