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.
Refractive Index 1.63-1.685
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.
Transparency Transparent to opaque.
Absorption Spectrum May show lines of iron spectrum.
Formula(Fe,Mn)AIPO4(OH)2 · H2O
Pleochroism Distinct: yellow/pink/colorless to pale pink.
Optics a = 1.63-1.645; β = 1.65-1.68; γ = 1.66-1.685. Biaxial (-), 2V= 40-45°.

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.