Iranian precious and semi-precious stones including agate, sapphire and rubi are put on a display on Saturday in the museum-palace complex of Sa'dabad, north of the capital city of Tehran, Iranian Cultural Heritage News Agency reported.
The exhibition, jointly organized by Iran's Handicraft Organization and Iranian Cultural Heritage and Tourism Organization (CHTO), aims at introducing such gems as amethyst, emerald and diamonds to the public.
Precious stones make up the third biggest non-oil exports in Iran, which first mined them over 7 millenniums ago.
One Iran's widely-found gems, which is agate is the same kind of rock as chert, but in a much purer, more transparent form. It consists of amorphous or cryptocrystalline silica, the mineral chalcedony. Agate forms from solutions of silica at relatively shallow depths and low temperatures, and is exquisitely sensitive to the physical and chemical conditions around it. It is commonly associated with the silica mineral opal. Fossilization, soil formation, and alteration of existing rock can all create agate.
Amethyst is a captivating purple crystal that's been a favorite among mystics and jewel lovers for ages.
... Payvand News - 9/11/04 ... --