Zektzerite Value, Price, and Jewelry Information

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

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

Zektzerite Value

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

Zektzerite Information

Crystallography Orthorhombic crystals generally tabular, pseudo-hexagonal, transparent to translucent.
Refractive Index 1.582-1.584
Colors Colorless to pink, sometimes with color zoning.
Luster Pearly on crystal faces, vitreous on cleavage and fracture surfaces.
Hardness 6
Specific Gravity 2.79.
Birefringence 0.002. The material is virtually isotropic.
Cleavage Perfect in 2 directions
Stone SizesColorless faceted gems in the 1-2 carat range have been reported. The material and hence the cut stones, are exceedingly rare.
Luminescence Fluoresces light yellow in SW, inert in LW, no phosphorescence either SW or LW.
Pleochroism None.
Optics α = 1.582; β = 1.584; γ = 1.584. Biaxial (-).

Optics: α= 1.582; β= 1.584; γ= 1.584.

Biaxial (-).

Occurrence: In a small number of miarolitic cavities in riebeckite granite in Okanogan County, Washington. This is the only known locality. Crystals up to 35 mm in size have been found, some transparent enough to yield small (less than 2 carats) faceted gems. Typical crystals are 4-15 mm in size, sometimes perched on riebeckite crystals.

Name: After Jack Zektzer of Seattle, Washington, who initiated the investigation of the newly discovered mineral.