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Radioactive Gems

 

 

The gems listed below are radioactive to some degree. Below the gem name is the relative degree of radioactivity (Barely Detectable, Mild, Weak, Strong, Very Strong) and the main element that is responsible for radioactivity in the gem and the percentage of the radioactive element present in the mineral. More information below.

 

 

 

 

 

 

 

Adularia

 

Afghanite

 

Ajoite

 

Allanite
Adularia (Feldspar)

 

Afghanite

 

Ajoite

 

Allanite-(Ce)

Barely: (K) 14.05%

 

Barely: (K) 2.28%

 

Barely: (K) 2.24%

 

Weak: (Ce) 27.35%

 

 

 

 

 

 

 

Alum-(K)

 

Alunite

 

Amazonite

 

Apophyllite
Alum-(K)

 

Alunite

 

Amazonite (Feldspar)

 

Apophyllite

Barely: (K) 8.24%

 

Barely: (K) 9.44%

 

Barely: (K) 14.05%

 

Barely: (K) 4.37%

 

 

 

 

 

 

 

Arrojadite

 

Astrophyllite

 

Autunite

 

Baratovite
Arrojadite-(KFe)

 

Astrophyllite

 

Autunite

 

Baratovite

Barely: (K) 1.92%

 

Barely: (K) 6.07%

 

Very Strong: (U) 48.27%

 

Barely: (K) 2.78%

 

 

 

 

 

 

 

Barrerite

 

Bastnaesite

 

Betafite

 

Boleite
Barrerite

 

Bastnäsite

 

Betafite

 

Boleite

Barely: (K) 1.55%

 

Weak: (Ce) 63.94%

 

Very Strong: (U) 17.20%

 

Barely: (K) 0.36%

 

 

 

 

 

 

 

Burbankite

 

Canasite

 

Celadonite

 

Chabazite
Burbankite

 

Canasite

 

Celadonite (incl.)

 

Chabazite

Mild: (Ce) 5.95%

 

Barely: (K) 6.22%

 

Barely: (K) 9.11%

 

Barely: (K) 11.07%

 

 

 

 

 

 

 

Charoite

 

Chevkinite-(Ce)

 

Coffinite

 

Cuprosklodowskite
Charoite

 

Chevkinite-(Ce)

 

Coffinite

 

Cuprosklodowskite

Barely: (K) 10.69%

 

Weak: (Th) 1.93%

 

VERY Strong: (U) 72.63%

 

VERY Strong: (U) 55.24%

 

 

 

 

 

 

 

Ekanite

 

Eudialyte

 

Euxenite-(Y)

 

Fergusonite-(Ce)
Ekanite

 

Eudialyte

 

Euxenite-(Y)

 

Fergusonite-(Ce)

Strong: (Th) 27.08%

 

Mild: (Ce) 7.06%

 

Mild: (Ce) 3.57%

 

Weak: (Ce) 28.31%

 

 

 

 

 

 

 

Fluorbritholite-(Ce)

 

Francevillite

 

Gadolinite

 

Ganophyllite
Fluorbritholite-(Ce)

 

Francevillite

 

Gadolinite-(Ce)

 

Ganophyllite

Weak: (Ce) 25.30%

 

VERY Strong: (U) 48.64%

 

Weak: (Ce) 16.74%

 

Barely: (K) 3.87%

 

 

 

 

 

 

 

Gmelinite-Na

 

Gorgeyite

 

Hanksite

 

Heulandite
Gmelinite-Na

 

Görgeyite

 

Hanksite

 

Heulandite

Barely: (K) 4.58%

 

Barely: (K) 8.96%

 

Barely: (K) 35.47%

 

Barely: (K) 0.60%

 

 

 

 

 

 

 

Hibonite

 

Hyalophane

 

Johnsenite-(Ce) inclusion in Quartz

 

Kaliborite
Hibonite

 

Hyalophane (Feldspar)

 

Johnsenite-(Ce) (incl.)

 

Kaliborite

Mild: (Ce) 1.98%

 

Barely: (K) 9.71%

 

Mild: (Ce) 2.66%

 

Barely: (K) 5.46%

 

 

 

 

 

 

 

Kentbrooksite

 

Lepidolite

 

Leucite

 

Londonite
Kentbrooksite

 

Lepidolite

 

Leucite

 

Londonite

Weak: (REE) 29.53%

 

Barely: (K) 10.07%

 

Barely: (K) 17.91%

 

Barely: (K) 1.93%

 

 

 

 

 

 

 

Mariposite

 

Autunite

 

Milarite

 

Monazite
Mariposite

 

Meta-Autunite

 

Milarite

 

Monazite-(Ce)

Barely: (K) 9.81%

 

Very Strong: (U) 56.53%

 

Barely: (K) 3.95%

 

Weak: (Ce) 29.17%

 

 

 

 

 

 

 

Mordenite

 

Mosandrite

 

Mica

 

Nepheline
Mordenite

 

Mosandrite

 

Muscovite (Mica)

 

Nepheline

Barely: (K) 0.45%

 

Weak: (Ce) 23.01%

 

Barely: (K) 9.81%

 

Barely: (K) 6.69%

 

 

 

 

 

 

 

Neptunite

 

Orthoclase

 

Parisite

 

Pezzottaite
Neptunite

 

Orthoclase (Feldspar)

 

Parisite

 

Pezzottaite (Beryl)

Barely: (K) 4.31%

 

Barely: (K) 14.05%

 

Weak: (Ce) 28.69%

 

Barely: (Rb) 0.52%

 

 

 

 

 

 

 

Phlogopite

 

Pollucite

 

Polycrase-(Y)

 

Potassic-fluoro-hastingsite
Phlogopite

 

Pollucite

 

Polycrase-(Y)

 

Potassic-fluoro-hastingsite

Barely: (K) 9.33%

 

Barely: (Rb) 1.20%

 

Strong: (U) 6.38%

 

Barely: (K) 4.12%

 

 

 

 

 

 

 

Poudretteite

 

Remondite

 

Rhodizite

 

Sadanagaite
Poudretteite

 

Rémondite

 

Rhodizite

 

Sadanagaite

Barely: (K) 4.28%

 

Weak: (Ce) 27.48%

 

Barely: (K) 3.77%

 

Barely: (K) 3.15%

 

 

 

 

 

 

 

Samarskite-(Y)

 

Sanidine

 

Soddyite

 

Sogdianite
Samarskite-(Y)

 

Sanidine (Feldspar)

 

Soddyite

 

Sogdianite

Very Strong: (U) 15.88%

 

Barely: (K) 10.69%

 

Very Strong: (U) 71.25%

 

Barely: (K) 5.59%

 

 

 

 

 

 

 

Steacyite

 

Syngenite

 

Sugilite

 

Taranakite
Steacyite

 

Syngenite

 

Sugilite

 

Taranakite

Strong: (Th) 25.29%

 

Barely: (K) 23.81%

 

Barely: (K) 3.80%

 

Barely: (K) 8.47%

 

 

 

 

 

 

 

Thorianite

 

Thorite

 

Tinaksite

 

Titanite (Sphene)
Thorianite

 

Thorite

 

Tinaksite

 

Titanite (Sphene)

Very Strong: (Th) 87.88%

 

Very Strong: (Th) 71.59%

 

Barely: (K) 10.40%

 

Mild: (REE) 3.64%

 

 

 

 

 

 

 

Vandenbrandeite

 

Yttrocrasite-(Y)

 

Yuksporite

 

 

Vandenbrandeite

 

Yttrocrasite-(Y)

 

Yuksporite

 

 

Very Strong: (U) 59.27%

 

Strong: (U) 7.99%

 

Barely: (K) 6.14%

 

 

 

 

 

 

 

 

Radioactive Gems

The gemstones above are radioactive as defined in 49 CFR 173.403 (greater than 70 Bq/gram), but are considered safe under most circumstances since gemstones of these types are usually small. However, gems with Strong and Very Strong radioactivity should be handled carefully with very limited contact and exposure.

The following radioacitve elements are found in radioactive gems (click on the elements for more information):

Ce - Cerium

K - Potassium

La - Lanthanum

Nd - Neodymium

Pr - Praseodymium

Rb - Rubidium

Sm - Samarium

Th - Thorium

U - Uranium

 

 

 

The following radioactive elements are also Rare Earth Elements (REE):
Ce - Cerium,  La - Lanthanum,  Nd - Neodymium,  Pr - Praseodymium,  Sm - Samarium,  Th - Thorium

Below are more details on the radioactive minerals gems. They are listed in order of their strength of radioactivity from strongest to least as measured by their GRapi units (Gamma Ray American Petroleum Institute). Hover your cursor over a gem name to see a picture of that gem type or click on the gem name to open a new page with detailed information about that gem type and our gems for sale.

 


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