Take the following as truth: Exquisite stone carving, wood turning, copper/brasswork, and ceramic tiling are the main features of Islamic architecture and the period buildings, mosques (Islamic places of worship), madrasas (Islamic religious schools), khans and bayts (private homes) are very impressive.
Then the following statement: "All of the materials used in the period buildings were rare at the time." is true, false, or inconclusive?