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):
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.
- Coffinite
-
VERY
Strong;
GRapi = 5,176,587.32
- contains 72.63% Uranium
(U)
- Soddyite
-
VERY
Strong;
GRapi = 5,126,250.25
- contains 71.25% Uranium
(U)
- Vandenbrandeite
-
VERY
Strong;
GRapi = 4,352,567.33
- contains 59.27% Uranium
(U)
- Meta-Autunite
-
Very
Strong;
GRapi = 4,234,083.25
- contains 56.53% Uranium
(U)
- Cuprosklodowskite
-
Very
Strong;
GRapi = 4,140,994.92
- contains 55.24% Uranium
(U)
- Autunite
-
Very
Strong;
GRapi = 3,754,512.44
- contains 48.27% Uranium
(U)
- Francevillite
-
Very
Strong;
GRapi = 3,545,303.50
- contains 48.64% Uranium
(U)
- Thorianite
-
Very
Strong;
GRapi = 1,505,305.18
- contains 87.88% Thorium
(Th)
- Betafite
-
Very
Strong;
GRapi = 1,310,418.25
- contains 17.20% Uranium
(U)
- Thorite
-
Very
Strong;
GRapi = 1,281,657.29
- contains 71.59% Thorium
(Th)
- Samarskite-(Y)
-
Very
Strong;
GRapi = 1,202,300.20
- contains 15.88% Uranium
(U)
- Yttrocrasite-(Y)
-
Strong;
GRapi = 784,722.58 -
contains 7.79% Thorium
(Th); 7.99% Uranium
(U)
- Polycrase-(Y)
-
Strong;
GRapi = 603,860.75 -
contains 6.38% Uranium
(U); 6.22% Thorium
(Th)
- Ekanite
-
Strong;
GRapi = 542,060.77
- contains 27.08% Thorium
(Th)
- Steacyte
-
Strong;
GRapi = 506,988.54
- contains 25.29% Thorium
(Th)
- Monazite-(Ce)
- Weak;
GRapi = 91,584.19 - contains Rare Earth Elements (REE); 29.17% Cerium
(Ce), 14.46%
Lanthanum (La),
12.01% Neodymium
(Nd), 4.83% Thorium
(Th)
- Bastnäsite-(Ce)
-
Weak;
GRapi = 60,386.61 -contains 63.94% Cerium
(Ce)
- Parisite
-
Weak;
GRapi = 50,156.22 - contains 28.69% Cerium
(Ce), 23.27%
Lanthanum (La)
- Gadolinite-(Ce)
-
Weak;
GRapi = 44,145.76 - contains 17.99% Neodymium
(Nd), 16.74% Cerium
(Ce), 10.98%
Lanthanum (La)
- Fergusonite-(Ce)
-
Weak;
GRapi = 40,097.08 - contains 28.31% Cerium
(Ce), 14.03%
Lanthanum (La)
- Chevkinite-(Ce)
-
Weak;
GRapi = 37,661.04 - contains 28.31% Cerium
(Ce), 14.03%
Lanthanum (La),
1.93% Thorium
(Th)
- Rémondite-(Ce)
-
Weak;
GRapi = 36,248.83 - contains 27.48% Cerium
(Ce), 9.08%
Lanthanum (La)
- Kentbrooksite
- Weak;
GRapi = 29,710.44
- contains 29.53% of the Rare Earth Elements (REE) Lanthanum (La),
Cerium (Ce),
Praseodymium (Pr),
Neodymium
(Nd), Samarium
(Sm)
- Fluorbritholite-(Ce) -
Weak;
GRapi = 29,254.55 - contains 25.30% Cerium
(Ce), 13.72%
Lanthanum (La)
- Allanite -
Weak;
GRapi = 27,438.55 - contains 27.35% Cerium
(Ce), 17.46%
Lanthanum (La)
- Mosandrite
-
Weak;
GRapi = 23,082.68 - contains 23.01% Cerium
(Ce)
- Eudialyte
-
Mild;
GRapi = 7,287.91 - contains 7.06% Cerium (Ce)
- Johnsenite-(Ce)
(incl.)
-
Mild;
GRapi = 6,454.67 - contains 2.66% Cerium (Ce),
1.36%
Lanthanum (La)
- Burbankite
- Mild;
GRapi = 5,871.73 - contains 5.95% Cerium (Ce)
- Hibonite
- Mild;
GRapi = 4,081.56 - contains 1.98% Cerium (Ce), 1.96%
Lanthanum (La)
- Titanite
(Sphene) - Mild;
GRapi = 3,805.77 - contains 3.64% of
the Rare Earth Elements (REE) Lanthanum (La),
Cerium (Ce),
Praseodymium (Pr),
Neodymium
(Nd), Samarium
(Sm)
- Euxenite-(Y)
- Mild;
GRapi = 3,420.62 - contains 3.57% Cerium (Ce)
- Pollucite
- Barely
detectable;
GRapi = 484.85 - contains 1.20% Rubidium (Rb)
- Londonite
- Barely
detectable;
GRapi = 457.11
- contains 1.05% Rubidium (Rb),
1.93% Potassium
(K)
- Syngenite
- Barely
detectable;
GRapi = 343.09 - contains 23.81% Potassium
(K)
- Leucite
- Barely
detectable;
GRapi = 255.81 - contains 17.91% Potassium
(K)
- Pezzottaite (Beryl)
- Barely
detectable;
GRapi = 212.96 - contains 0.52% Rubidium (Rb),
0.06% Potassium
(K)
- Adularia (Feldspar)
- Barely
detectable;
GRapi = 200.97 - contains 14.05% Potassium
(K)
- Amazonite (Feldspar)
- Barely
detectable;
GRapi = 200.97 - contains 14.05% Potassium
(K)
- Orthoclase (Feldspar)
- Barely
detectable;
GRapi = 200.97 - contains 14.05% Potassium
(K)
- Charoite
- Barely
detectable;
GRapi = 154.18 - contains 10.69% Potassium
(K)
- Sanidine (Feldspar)
- Barely
detectable;
GRapi = 152.94 - contains 10.69% Potassium
(K)
- Tinaksite
- Barely
detectable;
GRapi = 148.49 - contains 10.40% Potassium
(K)
- Lepidolite
- Barely
detectable;
GRapi = 143.68 - contains 10.07% Potassium
(K)
- Mariposite
- Barely
detectable;
GRapi = 140.52 - contains 9.81% Potassium
(K)
- Muscovite
(Mica)
- Barely
detectable;
GRapi = 140.52 - contains 9.81% Potassium
(K)
- Alunite
- Barely
detectable;
GRapi = 136.78 - contains 9.44% Potassium
(K)
- Hyalophane (Feldspar)
- Barely
detectable;
GRapi = 135.85 - contains 9.71% Potassium
(K)
- Phlogopite
- Barely
detectable;
GRapi = 133.53 - contains 9.33% Potassium
(K)
- Celadonite
(incl.)
- Barely
detectable;
GRapi = 130.24 - contains 9.11% Potassium
(K)
- Görgeyite
- Barely
detectable;
GRapi = 129.09 - contains 8.96% Potassium
(K)
- Taranakite
- Barely
detectable;
GRapi = 128.51 - contains 8.74% Potassium
(K)
- Alum-(K)
- Barely
detectable;
GRapi = 124.32 - contains 8.24% Potassium
(K)
- Nepheline
- Barely
detectable;
GRapi = 95.15 - contains 6.69% Potassium
(K)
- Canasite
- Barely
detectable;
GRapi = 89.32 - contains 6.22% Potassium
(K)
- Yuksporite
- Barely
detectable;
GRapi = 86.57 - contains 6.14% Potassium
(K)
- Astrophyllite
- Barely
detectable;
GRapi = 85.21 - contains 6.07% Potassium
(K)
- Kaliborite
- Barely
detectable;
GRapi = 79.53 - contains 5.46% Potassium
(K)
- Sogdianite
- Barely
detectable;
GRapi = 79.14 - contains 5.59% Potassium
(K)
- Apophyllite
- Barely
detectable;
GRapi = 62.81 - contains 4.37% Potassium
(K)
- Poudretteite
- Barely
detectable;
GRapi = 61.48 - contains 4.28% Potassium
(K)
- Neptunite
- Barely
detectable;
GRapi = 60.73 - contains 4.31% Potassium
(K)
- Fluoro-potassichastingsite
- Barely
detectable;
GRapi = 58.40 - contains 4.12% Potassium
(K)
- Milarite
- Barely
detectable ;
GRapi = 56.71
- contains 3.95% Potassium
(K)
- Ganophyllite
- Barely
detectable;
GRapi = 55.45 - contains 3.87% Potassium
(K)
- Sugilite
- Barely
detectable;
GRapi = 54.07 - contains 3.80% Potassium
(K)
- Rhodizite
- Barely
detectable;
GRapi = 52.60 - contains 3.77% Potassium
(K)
- Sadanagaite
- Barely
detectable;
GRapi = 44.72 - contains 3.15% Potassium
(K)
- Baratovite
- Barely
detectable;
GRapi = 39.51 - contains 2.78% Potassium
(K)
- Hanksite
- Barely
detectable;
GRapi = 35.47 - contains 2.50% Potassium
(K)
- Afghanite
- Barely
detectable;
GRapi = 32.54 - contains 2.28% Potassium
(K)
- Ajoite
- Barely
detectable;
GRapi = 31.60 - contains 2.24% Potassium
(K)
- Arrojadite-(KFe)
- Barely
detectable;
GRapi = 26.90 - contains 1.92% Potassium
(K)
- Barrerite
- Barely
detectable;
GRapi = 22.57 - contains 1.55% Potassium
(K)
- Chabazite
- Barely
detectable;
GRapi = 11.07 - contains 0.75% Potassium
(K)
- Heulandite
- Barely
detectable;
GRapi = 8.68 - contains 0.60% Potassium
(K)
- Mordenite
- Barely
detectable;
GRapi =
6.53 - contains 0.45% Potassium
(K)
- Gmelinite-Na
- Barely
detectable;
GRapi =
4.58 - contains 0.31% Potassium
(K)
- Boleite
- Barely
detectable;
GRapi = 4.47 - contains 0.36% Potassium
(K)
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