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Tag: rare minerals

Nov 22

Fibrolite

DanushkaLeave a Comment on FibrolitePosted in Gem Hunting Travels, Gem Mining, Gemology, Minerals, Practical Gemology, Stories Tagged , , , ,

Fibrolite is an aluminosilicate mineral with the chemical formula Al2SiO5. Fibrolite is fibrous form the gemstone variety of sillimanite. Although fibrolite has priority over sillimanite, the two species were not ultimately recognized as the same species until about 1854 by James Dwight Dana. Named in 1802 by Jacques Louis Comte de Bournon because of its fibrous habit. It is an Orthorhombic […]

Nov 21

Kornerupine Big Rough Stone

DanushkaLeave a Comment on Kornerupine Big Rough StonePosted in Gem Hunting Travels, Gem Mining, Gemology, Minerals, Stories Tagged , , , ,

Natural Kornerupine facet grade huge gem piece found from Sri Lankan Rare Gemstone mining area. It can be seen yellowish chrom green and greenish yellow Pleochroism as a directional properties. Kornerupine is a rare boro-silicate mineral with the formula (Mg, Fe²⁺)₄(Al, Fe³⁺)₆(SiO₄, BO₄)₅(O, OH)₂. It has a specific gravity of 3.3 to 3.34 and Colours such as […]