Chalcedony. A semi-cherished gemstone named following the nearby town of Chalcedon, which is marketed in many of Istanbul's large number of jewellery retailers. These days, most metro stations do not need a staffed ticket booth, so you'll have to get your Istanbulkart with the yellow ticket machines. By tram[edit] There https://istanbul-wordpress67890.p2blogs.com/35648087/indicators-on-istanbul-work-you-should-know