Xonotlite Value, Price, and Jewelry Information
Xonotlite is strong and can take a good polish. However, these gems are extremely rare, both as a species and cut specimens.
The International Gem Society (IGS) has a list of businesses offering gemstone appraisal services.
|Crystallography||Monoclinic: crystals acicular; usually massive, fibrous, or compact.|
|Colors||Chalky white to colorless, pink, light to medium gray.|
|Luster||Greasy; pearly; dull vitreous.|
|Cleavage||Good in one direction|
|Transparency||Transparent to translucent.|
|Optics||a = 1.583; β = 1.583; γ = 1.593. Biaxial (+).|
|Etymology||After the type locality, Tetela de Xonotla, Mexico.|
|Occurrence||Typically as veinlets in serpentine or in contact zones.|
Lapidaries have cut translucent (not truly transparent) faceted stones up to several carats in size from Italian material.
Researchers have synthesized xonotlite via the hydrothermal method. The synthetic material has been used in powder form for industrial purposes, such as absorption, insulation, and pigment extension. However, no jewelry use for this material is known.
Mexico and the Vicenza region of Italy have produced gem-quality, facetable material.
- Tetela de Xonotla, Mexico.
- Laghi di Posina, Vicenza, Italy.
Other notable sources include the following:
- United States: California; Michigan; Puerto Rico; Virginia.
- Canada; Japan; South Africa.
Despite a mid-range hardness (6), xonotlites have greater resistance to blows than many jewelry gemstones. They have a “tough” tenacity, while most gemstones only rank as “brittle.” Nevertheless, you’re more likely to find these stones in mineral collections than in jewelry collections. Consult our gemstone jewelry cleaning guide for care recommendations.