The smallest published Koran book measures 1.7 cm 1.28 cm 0.72 cm (0.66 in 0.50 in 0.28 in). Printed in Arabic, it is 571 pages long.The book was published in Cairo in 1982 and is owned by Dr. Muhammad Saeed Karim Beebani of Pakistan.
Your vote on this answer has already been received
Using the latest nanotechnology, the world's smallest Quran was created by Dr. Mir Mokhtari, Managing Director of Mir Enterprises Limited. Written on sapphire, the second strongest stone, with either platinum or 24 ct gold writing, the entire stone spans 58mm by 98mm, and was officially registered as the smallest copy of the Quran in the world at Astan-e Qods Razavis Quran museum in Iran.