Product details
100% Natural – Not treated in any way.
Rare Collectors Gem
Suitable for Museums,Institutions and Students of Gemology.
Clean Gems are rare.
Large Sizes are Extremely Rare!
Among the Rarest of gemstones.
Refractive Index: 1.67 =1.71
Hardness: 6 1/2
Chemical Comp: (Mg,Fe,Mn)2SiO4
Crystal Group:Orthorhombic
Dunilite occurs in only one locality called, “Katukubura mountain” Kolonne, Sri Lanka. The first morphological data for dunilite was obtained from a 0.97-carat faceted gemstone as a new member of the olivine group.
Long mistaken for green peridot, dunilite was identified in 2000 as a new gem variety from olivine group.. The x-ray diffraction pattern shows that the line spacing is similar to period however are not identical with those for period. Color: Light Greenish Yellow.
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