http://www.presstv.com/section/3510515.htmlMore than 7000 years ago extracting turquoise from mines of Neishaboor in the north east of Iran began.Since then Iran's turquoise and many other gemstones have set the standards for this precious stone all around the world.In this edition of Iran program Hoda Lezgi tells us more about the Iranian precious stones as well as their various uses in the country.