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Rubellite is the red or pink variety of tourmaline and is a member of elbaite. Rubellite is also the rarest gem in its family. [2] It is occasionally mistaken for ruby. [3] These gems typically contain inclusions. [4] Notable countries where rubellite can be mined include Afghanistan, Brazil, Madagascar, Myanmar, Nigeria, Russia, and the United ...
In 1979, Gemstones Corporation of Pakistan was established to develop the gemstones sector in Pakistan, however in 1997 the corporation liquidated. [3] Now a number of organizations are working in this sector including All Pakistan Commercial Exporters Association of Rough & Unpolished Precious and Semi Precious Stones (APCEA) and Pakistan Gems and Jewellery Development Company (PGJDC).
Dispersion: 0.017 [1]: Ultraviolet fluorescence: Pink stones; inert to very weak red to violet in long and short wave [1]: Absorption spectra: Strong narrow band at 498 nm, and almost complete absorption of red down to 640 nm in blue and green stones; red and pink stones show lines at 458 and 451 nm, as well as a broad band in the green spectrum [1]
Tourmaline (1971) Maryland [37] Patuxent River stone agate (2004) Massachusetts [38] Babingtonite (1971) Roxbury puddingstone (1983) Rhodonite (1979) Michigan [39] Petoskey stone fossilized coral (1965) Chlorastrolite (aka Isle Royale greenstone) (1972) Minnesota [40] Lake Superior agate (1969) Mississippi [41] [42] Petrified wood (1976) Opal ...
Amethyst crystals – a purple quartz Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite Aquamarine variety of beryl with tourmaline on orthoclase Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals Austinite from the Ojuela Mine, Mapimí, Durango, Mexico Ametrine ...
In 2014 she was cautioning collectors as it was observed that coloured gemstones were the fashion rather than diamonds. Some of the value and interest was due to fashion, but Hardy noted that the gems were rare and that was the underlying reason why they achieved high prices. However many gems were heatreated to give an unoriginal colour. [5]
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