Weloganite Value, Price, and Jewelry Information
An overview on Weloganite Jewelry and Gemstones. Covers details and essential information on the physical properties and characteristics of Weloganite gems.
The International Gem Society (IGS) has a list of businesses offering gemstone appraisal services.
|Crystallography||Hexagonal; crystals hexagonal, barrel shaped with heavy striations on prism faces, also grooved due to oscillatory growth. Crystals distinctive, terminated by pedion or pyramids. Also massive.|
|Colors||White, lemon yellow, amber. Crystals may be zoned.|
|Stone Sizes||Clean, yellowish stones (mostly under ½ carat) have been faceted from this material. National Museums of Canada (Ottawa, Ontario): 4.27 (light greyish-yellow); 0.52 (light yellow).|
Optics: a= 1.558; β= 1.646; γ=1.648.
Occurrence: In an alkalic sill intruding a limestone at St. Michel, Montreal Island, Quebec, Canada.
Name: For William E. Logan, first director of the Geological Survey of Canada.