Chalcedony. A semi-precious gemstone named after the nearby town of Chalcedon, and is also sold in most of Istanbul's large number of jewellery outlets. Through the Bosphorus to east is Asian Aspect, centred around the historic districts of Kadıköy and Üsküdar, and maybe best symbolized by Maiden’s Tower, Found at https://istanbul-wp02233.blognody.com/40932830/the-smart-trick-of-istanbul-wordpress-that-nobody-is-discussing