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
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.
Formula SrCO3
Colors Colorless, white, gray, yellowish, yellowish brown, greenish,  reddish.
Fracture Uneven
Hardness 3.5
Cleavage Perfect 1 direction
Crystallography Orthorhombic. Crystals prismatic, often in tapering crystals in sprays and fans: massive. granular.
Refractive Index 1.52-1.67
Birefringence 0.150
Dispersion 0.008-0.028
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
Absorption Spectrum Not diagnostic.
Optics = 1.52; β =1.66; γ = 1.67. Biaxial (-), 2V= 7°.
Optic Sign Biaxial -
Luster Vitreous to resinous.
Fracture Luster Greasy.
Specific Gravity 3.63-3.785, depending on Sr content (vs. Ca).
Transparency Transparent to translucent.

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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