Chalcedony. A semi-treasured gemstone named after the close by city of Chalcedon, and is also bought in lots of Istanbul's large number of jewellery outlets. Nowadays, most metro stations would not have a staffed ticket booth, so you will need to acquire your Istanbulkart from the yellow ticket equipment. By https://donovanrfslv.snack-blog.com/37030439/how-much-you-need-to-expect-you-ll-pay-for-a-good-istanbul-wordpress