Orsi differs from stained glass used in many churches and Ottoman mosques which serve as illuminated images rather than a source of light. Light is a major feature in many mosques considering it being a major symbol of God in Islam. This is mentioned in a chapter in Quran: ″Allah is the light of the heavens and the earth″[5] Orsi in Nasir al Molk mosque creates a major definitive feature that makes up the colorful spiritual feeling of awe in the visitor when entering.