This book is a fundamental study of the Quran which emerges from a new idea regarding the title and content. It looks at the conclusions of the long surahs in the Quran, because these conclusions in general determine the outcomes of affairs. The book extracts the secrets, meanings, indications and guidance hidden in these conclusions. They attract attention with their beauty and captivate the ear with their plot and content. They deserve to be called "jewels" because they cover fundamental topics of faith and its principles such as guidance, belief in Allah, His Messenger, the believers and the pious, disbelief and the disbelievers, the Day of Judgment, the Koran, the divine Throne, the people of the Book, the story of Issa (Jesus) and his mother Mary, prayer and polytheism, the angels. They also deal with important legal issues such as invocations, concentration in prayer, patience and perseverance, as well as certain rules on inheritances and religious obligations, among others. The book strives to uncover them through research, reflection, meditation, effort, and diligence in order to grasp these gems, reveal their contents, and explain their purposes. It aims to be a valuable and useful resource for readers or researchers.