Yugawaralite Value, Price, and Jewelry Information
An overview on Yugawaralite Jewelry and Gemstones. Covers details and essential information on the physical properties and characteristics of Yugawaralite.
The International Gem Society (IGS) has a list of businesses offering gemstone appraisal services.
|Is a Variety of||Zeolite|
|Crystallography||Monoclinic: crystals tabular and very flat.|
|Colors||Colorless to white.|
|Stone Sizes||Superb, Well-formed, colorless, transparent crystals up to 3 cm long occur at the Khandivali Quarry, Bombay, India, with physical properties close to the literature values for the mineral. A few colorless faceted gemstones have been cut from this exceptional and extremely rare material.|
|Formula||CaAl2Si6O16 · 4H2O.|
|Optics||a = 1.495; β = 1.497; γ = 1.504. Biaxial (+).|
Optics: a=1.495; β= 1.497; γ=1:504.
Occurrence: In veins and crystals in volcanic rocks in Japan and in huge crystals in breccia cavities in India.
Yugawara Hot Spring, Kanagawa Prefecture, Japan.
Khandivali Quarry, near Bombay, India.
Alaska; Iceland; Sardinia; British Columbia.
Name: From the original Japanese locality.