Jewelry and jade are divided into organic and inorganic materials. Organic jewelry includes pearls, corals and amber. Inorganic substances are mostly minerals and rocks, but not all minerals and rocks can be used to make jewelry, only more than 200 kinds can be used as gem materials. Nothing that can be identified at present is radioactive.

Among more than 3,000 minerals known in nature, some do contain radioactive elements, such as feldspar, nepheline, orthoclase, potash feldspar and a small amount of special fluorite.

The radioactivity of some minerals is harmful to human body, such as copper uranium mica and pyrochlore. However, their harm has been known, and these minerals will never be used as gem materials.

Traditional gems such as diamonds, rubies, sapphires, emeralds and jadeites are not radioactive and can be worn with confidence.

For example, jadeite can be divided into A, B and C goods. A Jade is a natural jade, which is not radioactive and has no problem to wear. B jadeite is treated by pickling, bleaching and glue injection, and C jadeite is treated by dyeing.

Both B-grade jadeite and C-grade jadeite have been artificially used, even using chemical products, which still has hidden dangers to human body. It is recommended to buy natural grade A jadeite to avoid the harm of inferior jadeite to the body.