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Frequently Asked Questions (FAQ) / Jade or Jadeite

What is the difference between jade and jadeite?

What was traditionally called jade is in fact two separate and distinct minerals; jadeite and nephrite. These two materials have different chemical compositions, levels of hardness and densities. They even have different crystal structures. Most of the classic jade from China is nephrite; jadeite comes mainly from Burma. The rarest and most valuable jadeite is called imperial jade, and is colored green by traces of chromium. It has a color and transparency that rivals fine emerald, though imperial jade is slightly more yellow in tone. Jadeite is generally very expensive, while nephrite is still quite affordable.

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  • First Published: February-20-2006
  • Last Updated: November-11-2014
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart