Chalcedony. A semi-treasured gemstone named once the nearby town of Chalcedon, and is also marketed in most of Istanbul's multitude of jewellery shops. Through the Bosphorus to east is Asian Side, centred across the historic districts of Kadıköy and Üsküdar, and maybe very best symbolized by Maiden’s Tower, Found at https://wordpresskursuistanbul68901.blogofchange.com/37452524/about-wordpress-kursu-istanbul