Parisite Value, Price, and Jewelry Information


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

An overview on Parisite Jewelry and Gemstones. Covers details and essential information on the physical properties and characteristics of Parisite gemstones

Parisite Value

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

Parisite Information

DataValue
NameParisite
Crystallography Hexagonal; crystals double hexagonal pyramids, often steep, sometimes prismatic, striated; sometimes rhombohedral.
Refractive Index 1.676-1.757
Colors Brownish yellow, brown, grayish yellow.
Luster Vitreous to resinous; pearly on basal cleavage surfaces.
Fracture Subconchoidal to splintery
Hardness 4.5
Specific Gravity 4.36.
Birefringence 0.081
Cleavage Distinct basal parting or cleavage; perhaps due to alteration
Stone SizesParisite is a rare mineral, and crystals are usually very small. Tiny faceted stones (all under 1 carat) have been cut from Montana material.
Luminescence Not reported.
Absorption Spectrum Not diagnostic.
FormulaCa(Ce,La)2(CO3)3F2.
Pleochroism Weak.
Optics o = 1.676; = 1.757. Uniaxial (+).

Optics: o=1.676; e= 1.757.

Uniaxial (+).

Occurrence: In carbonaceous shale beds in the emerald deposits of Muzo, Colombia: also as typical inclusions in emerald crystals. Also in alkali pegmatites in Norway.

Muzo, Colombia.

Langesundsfford, Norway.

Italy; Madagascar; Manchuria.

Quincy, Massachusetts: Ravalli County, Montana.

Name: After J. J. Paris, proprietor of the mine at Muzo where the mineral was first discovered.