Haϋyne Value, Price, and Jewelry Information


Hauyne
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0 [CC-BY-SA-3.0], via Wikimedia Commons

Haϋyne is one of the major constituents of lapis lazuli, a well-known and ancient gem material. It is, however, rarely seen as a distinct gem species. It is cut for collectors mainly as a curiosity, but faceted gems that are deep blue in color are extremely beautiful. Blue is the most sought after color in this material.

Haϋyne Value

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Haϋyne Information

DataValue
NameHaϋyne
VarietiesLazurite, Lapis Lazuli
Crystallography Isometric. Crystals dodecahedral or octahedral; usually rounded grains.
Colors Blue; also white, shades of gray, green, yellow, and red. Translucent to semitransparent.
Luster Vitreous to greasy.
Fracture Conchoidal to uneven; brittle.
Hardness 5.5-6
Specific Gravity 2.40-2.50. (Eifel = 2.40.)
Cleavage Distinct 1 direction.
Stone SizesOpaque material is cut into cabochons up to an inch or two, but faceted gems are exceedingly rare and always small (under 1-2 carats), chiefly from the Eifel region of West Germany.
Luminescence Usually none; sometimes orange-red in LW (Germany).
Spectral Not diagnostic.
Formula(Na,Ca)4-8(AI6Si6)O24(SO4S )1 -2.

Sodalite Group: See Lazurite.

Streak: Slightly bluish to colorless.

Optics:  N= 1.496-1.505. (Eiffel = 1.502)

Occurrence: Alkaline igneous rocks, associated with leucite and nepheline.

Montana; South Dakota; Colorado.

Quebec, Canada; France; Laacher See, Germany; Italy; Morocco.

Comments: Haϋyne is one of the major constituents of lapis lazuli, a well-known and ancient gem material. It is, however, rarely seen as a distinct gem species. It is cut for collectors mainly as a curiosity, but faceted gems that are deep blue in color are extremely beautiful. Blue is the most sought after color in this material.

Name: After René Just Haϋy, one of the great early mineralogists.