Jade is a prized gemstone that encompasses two mineral types. These two types of Jade are Jadeite and Nephrite. Even though both are considered Jade, the silicate mineral structures for both are different. Jadeite is a silicate of sodium and aluminum and forms an oily translucent appearance and Nephrite is composed calcium and magnesium and has a appearance similar to glass.
Mineral Name
Jadite
Chemical Formula
Na(Al,Fe)Si2O6
Specific Gravity
3.3 to 3.5
Moh's Hardness
6.5 to 7.0
Mineral Name (Second Form)
Nephrite
Chemical Name
Ca2(Mg,Fe)Si8O22(OH2)
Specific Gravity
3.0 to 3.3
Moh's Hardness
5.0 to 6.0
Jade can occur in a variety of colors which can range from green, red, purple, yellow and brown. Jade is a tough mineral that can be shaped into tools and fine jewelry and mineral deposits be found throughout the world. The best quality jade can be found in Myanmar, New Zealand, Regions of the United States, Canada and Russia.
The value of jade is determined by its color intensity, vividness along with its clarity and transparancy. Colors that are most valued are the imperial jade, green apple and spinach green with lighter colors of white, yellow and pink tones are more valued in the Far East.
