Jadeite – Jadeite is a pyroxene mineral composition NaAlSi2O6 (the mineral must have more than 50% of sodium and aluminium-rich to qualify as Jadeite) and is monoclinic. Jadeite is formed in metamorphic rocks under high pressure and relatively low temperature conditions. It has a Mohs hardness of about 6.5 to 7.0 and dense in between 3.25 to 3.35 depending on the composition. Jadeite’s color is largely affected by the presence of trace elements of chromium. It’s commonly color ranges from white through jade green. And the most common color is pale green. The jade green is more valuable. The Nephrite has a longer history than jadeite. Today, the main exporting country of jadeite are Union of Myanmar (the world’s largest jade exporter) , Guatemala, USA and Russia (only has a small amount of export).
Jadeite Jade Bangle
Nephrite – The chemical composition of nephrite is the calcium and magnesium silicate (Ca2Mg5 (OH) 2 (Si4O11) 2),. It is monoclinic. It’s color is depends on the composition of amphibole and actinolite. The color of Amphibole mineral mainly is in white and grey. The color of actinolite is according to iron content and their degree of oxidation of iron level, and it can cause colors varies in dark green, reddish brown and black.
Nephrite Jade Bangle
Nephrite is softer than the natural jade stone. High purity and texture is produced in Hetian from Xinjiang. It has a glass – oil sheen like shades. It proportion of minerals is in between 2.80 – 3.10, and Mohs hardness around 6 – 6.5. It’s color due to the presence of different mineral composition can present in pure white to mist dark and other colors. It is the toughness in jade stone and is not easily to damage. In addition, the community is popular so-called “China’s four famous jade” which are Hetian jade, Turquoise, Xiuyan jade and Dushan jade. However, only Hetian jade and Xiuyan jade are truly belong to Nephrite in mineralogy.