The Secret of Lime Stone

Limestone, which is formed by seashells and mostly by small oyster shells are a kind of oyster calcerous. Its most important feature is easy processing and being suitable for any process the moment it is extracted from the nature, and it gains hardness, resistance and strength by absorbing the carbondioxide in the air, after getting in contact with the air... Therefore, it is the basic building block that is used inside and outside of all buildings that constitute Istanbul's aesthetic appearance, since the construction of Hagia Sophia by Byzantine and Topkapi walls, and Suleymaniye Complex in Ottoman period.