Hodgkinsonite Value, Price, and Jewelry Information
Hodgkinsonite is one of the rarest of all collector gems. Cut stones are bright and richly colored, but the crystals were never abundant and still fewer had transparent areas. Fewer than 10 cut stones may exist.
The International Gem Society (IGS) has a list of businesses offering gemstone appraisal services.
|Crystallography||Monoclinic. Crystals pyramidal or prismatic; massive; granular.|
|Colors||Bright pink to reddish brown, purplish pink.|
|Hardness||4.5 - 5|
|Cleavage||Perfect 1 direction|
|Stone Sizes||Cut gems are very small, less than 2 carats. This is an exceedingly rare material, available from only one locality and only from older specimens. Private Collection: 0.89,|
|Luminescence||Dull red in LW.|
|Transparency||Transparent (rare) to translucent.|
|Absorption Spectrum||Not diagnostic.|
|Optics||a = 1.720; β = 1.741; γ = 1.746. Biaxial (- ), 2V= 52°.|
Optics: a = 1.720; , β= 1.741; γ= 1.746.
Biaxial (- ), 2V= 52°.
Occurrence: in metamorphosed limestone at Franklin, New Jersey with various other Zn and Mn minerals. Individual crystals reached ¾ inch in diameter, in veins up to several inches thick. The material was mined out years ago.
Comments: Hodgkinsonite is one of the rarest of all collector gems. Cut stones are bright and richly colored, but the crystals were never abundant and still fewer had transparent areas. Fewer than 10 cut stones may exist.
Name: After H. H. Hodgkinson of Franklin, New Jersey, who discovered the mineral.