Childrenite Value, Price, and Jewelry Information


CHILDRENITE: Brazil (1.37). Photo © Joel E. Arem, PhD, FGA. Used with permission.

Cut childrenite is a great rarity, and all gems are small. Cut eosphorite is more abundantly available, though both materials are very scarce.

Childrenite Value

The International Gem Society (IGS) has a list of businesses offering gemstone appraisal services.

Childrenite Information

DataValue
NameChildrenite
Crystallography Orthorhombic. Crystals equant, pyramidal, platy, often doubly terminated.
Colors Brown to yellowish brown, golden yellow.
Luster Vitreous to resinous.
Fracture Uneven to subconchoidal.
Hardness 5
Specific Gravity 3.2 (pure Fe end member).
Birefringence 0.030-0.040.
Cleavage Poor.
Stone SizesChildrenite occurs in brown, opaque crystals up to several inches long. Transparent material is much smaller, and facetable crystals yield stones up to about 3-4 carats. In general, cuttable material in this series is closer to the eosphorite end. Devonian Group (Calgary, Alberta, Canada): 3.58 (Brazil).
Luminescence None.
Spectral May show lines of iron spectrum.
Formula(Fe,Mn)AIPO4(OH)2 · H2O
Pleochroism Distinct: yellow/pink/colorless to pale pink.

Series to Eosphorite if Mn exceeds Fe.

OPTICS: a = 1.63-1.645; β = 1.65-1.68; γ = 1.66-1.685. Biaxial (-), 2V= 40-45°.

OCCURRENCE: In granite pegmatites and hydrothermal vein deposits.

Cornwall, England; Greifenstein  Germany; Custer, South Dakota.

Minas Gerais, Brazil: gemmy crystals. These are found to be Fe: Mn = 1:1 and could be called childro-eosphorite.

COMMENTS: Cut childrenite is a great rarity, and all gems are small. Cut eosphorite is more abundantly available, though both materials are very scarce.

NAME: J. G. Children, English mineralogist.