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
Colors Colorless, shades of yellow, reddish.
Crystallography Tetragonal. Crystals thin and tabular; also aggregates.
Refractive Index 1.593-1.612
Luster Vitreous.
Hardness 5-5.5
Fracture Uneven
Specific Gravity 3.0-3.03
Birefringence 0.019
Cleavage Perfect 1 direction
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.
Luminescence None.
Luminescence Present No
Transparency Translucent to transparent.
Absorption Spectrum Not diagnostic.
Formula

(Ca,Na)2Be(Si,Al)2(O,OH,F)7.

Pleochroism

Distinct in shades of yellow and red.

Optics

o = 1.612; e = 1.593. Uniaxial (-).

Optic Sign Uniaxial -

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.