Strontianite Value, Price, and Jewelry Information

STRONTIANITE: Austria (2.1). Photo © Joel E. Arem, PhD, FGA. Used with permission.

Strontianite

Strontianite is a collector’s oddity, with no spectacular properties to recommend it. Colors are usually pale and there is little fire; in addition, the high birefringence doubles back facets and kills the brilliance of the stone. Cut strontianites are, however, decidedly uncommon and worth pursuing for their scarcity value.

Strontianite Information

Data Value
Name Strontianite
Colors Colorless, white, gray, yellowish, yellowish brown, greenish,  reddish.
Crystallography Orthorhombic. Crystals prismatic, often in tapering crystals in sprays and fans: massive. granular.
Refractive Index 1.52-1.67
Luster Vitreous to resinous.
Fracture Luster Greasy.
Hardness 3.5
Fracture Uneven
Specific Gravity 3.63-3.785, depending on Sr content (vs. Ca).
Birefringence 0.150
Cleavage Perfect 1 direction
Dispersion 0.008-0.028
Stone Sizes Very small faceted gems have been cut from small, pale-colored crystals from various localities, especially Germany and Austria. The maximum size is about 2-4 carats, but an occasional larger stone might be encountered.
Luminescence In SW and LW, may be white, Olive green, bluish green, with phosphorescence. Both fluorescent and phosphorescent in X-rays.
Luminescence Present Yes
Luminescence Type Fluorescent, Phosphorescent, UV-Long, UV-Short, X-ray Colors
Transparency Transparent to translucent.
Absorption Spectrum Not diagnostic.
Formula

SrCO3

Optics

= 1.52; β =1.66; γ = 1.67. Biaxial (-), 2V= 7°.

Optic Sign Biaxial -

STRONTIANITE Aragonite Group. Series to Aragonite (CaCO). Witherite (BaCO3)

Optics: a=1.52;β=1.66; γ= 1.67.

Biaxial (-), 2V= 7°.

Occurrence: A low-temperature mineral, in veins, geodes, marls, and sulfide veins.

San Bernardino County, California; Schoharie. New York; Ohio; New Mexico; Texas; Louisiana; South Dakota; Washington.

Scotland; Mexico; India; Austria.

Carleton County, Ontario, Canada; British Columbia.

Canada; Germany: major deposits.

Pennsylvania; small crystals.

Comments: Strontianite is a collector’s oddity, with no spectacular properties to recommend it. Colors are usually pale and there is little fire; in addition, the high birefringence doubles back facets and kills the brilliance of the stone. Cut strontianites are, however, decidedly uncommon and worth pursuing for their scarcity value.

Name: From the town in Scotland where the mineral was first found.

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