Tag Archives: beryllium opal

About Stones: Bertrandite

bertrandite

Astrological Sign: Pisces, Capricorn, Aquarius
Chakra: Root, Sacral
Lore: Bertrandite supports a smooth transition when undergoing change. It assists in the verbalization of hidden feelings. Bertrandite is reputed to enhance sexual energy.
Geology: This relatively new material, an opalized fluorite, is also called Beryllium Opal,  “Tiffany Stone”  and Ice Cream Opalite. It occurs in a mixture of cream or white opalite with purple fluorite, traces of yellow bertrandite, along with other red or black mineral inclusions. Mineralized beryllium nodules altered by a fluorine-rich solution form in the sequence dolomite-calcite-chalcedony-opal/fluorite. The nodules are recovered from an area where the bertrandite rock is mined commercially for the recovery of beryllium used in the manufacture of satellites and aircraft. Bertrandite is beryllium silicate hydroxide.
Composition: Be4Si2O7(OH)2
Hardness: 6-7
Locality:  Brush Wellman Beryllium Mine, Juab County, Delta, Utah