Meliphanite Value, Price, and Jewelry Information

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

Meliphanite

Meliphanite is an extremely rare gemstone, and perhaps fewer than 5-10 faceted stones have ever been cut.

Meliphanite Information

Data Value
Name Meliphanite
Stone Sizes Crystal clusters have been found up to several inches long. Clean, facetable material is very rare, however; the material is sometimes cut into small cabochons.
Formula (Ca,Na)2Be(Si,Al)2(O,OH,F)7.
Colors Colorless, shades of yellow, reddish.
Fracture Uneven
Hardness 5-5.5
Cleavage Perfect 1 direction
Crystallography Tetragonal. Crystals thin and tabular; also aggregates.
Refractive Index 1.593-1.612
Birefringence 0.019
Luminescence None.
Luminescence Present No
Absorption Spectrum Not diagnostic.
Pleochroism Distinct in shades of yellow and red.
Optics o = 1.612; e = 1.593. Uniaxial (-).
Optic Sign Uniaxial -
Luster Vitreous.
Specific Gravity 3.0-3.03
Transparency Translucent to transparent.

MELIPHANITE (= MELINOPHANE)

Optics: o = 1.612; e=1.593.

Uniaxial (-).

Occurrence: Nepheline syenites and skarns.

Julienhaab district, Greenland; Langesundsfford, Norway:

Gugiya, China.

Comments: Meliphanite is an extremely rare gemstone, and perhaps fewer than 5-10 faceted stones have ever been cut.

Name: From Greek words meaning appearing as honey, in allusion to the color.