Quartz crystal is actually a mineral, one of the most abundant minerals in the Earth's continental crust, composed of silicon and oxygen. Quartz can be icy clear or have inclusions, veils, bubbles and various colors. People in the earliest recorded times believed in the magical powers of quartz. Ancient Roman, Egyptian and Greek civilizations used quartz crystals as potent talismans. Quartz crystal is a power stone that's prized as a healing stone. Known as the most powerful healing stone of the mineral kingdom, able to work on any condition. It's called the Universal Crystal because of its many uses and is beneficial for manifesting, healing, meditation, protection and channeling. Its ability to balance, quartz is excellent for harmonizing and stabilizing one's environment. It is said to amplify healing energy and is particularly effective for chronic fatigue, arthritis, bone injuries, depression, diabetes, fibromyalgia and intestinal troubles. It is also believed to improve mental and physical energy, stamina and physical strength. Quartz enhances spiritual growth, spirituality and wisdom. Because it clarifies thought processes and emotions, it can increase inspiration and creativity. It can also help with concentration, studying and retaining what one learns.
According to a reliable tradition Al-Mufaddal Ibn Umar Al-Ju'fi once visited Imam Ja'far-Sadiq (as) when he had put on a ring of Dur-E-Najaf. The Imam (as) addressed Al-Mufaddal thus, 'O Al-Mufaddal, all mo'mineenandmi'minat (all believing men and women) feel happy when the sight of this gem and the pain of their eyes is relieved. I want every momin to have five rings; Yaqoot (ruby) ring is the best and second comes Aqeeq as it is a stone which has affection for God & Ahlul-Bayt (as) and thirdly, a ring of Feroza (turquoise) which gives strength to the eyes, expands the chest and strengthens the heart. Whenever a momin goes for some work with a turquoise ring on this finger, his work is done. Fourthly, one should wear the ring of Hadeed-Cheeni, but not always, only when one is afraid of some mischief then he should visit that place with this ring on as the stone keeps the devil away; therefore it is advisable to possess it. And the fifth ring should be of that stone which is found only in Najaf (Dur-E-Najaf). When a person wears a ring of this stone, at his every glance towards it, God gives him the reward of Ziarat, Haj and Umrah, which are kept in his record of action. The reward is equal to the reward of the Prophets and pious. If God had not been merciful towards the Shias, every gem of Dur-E-Najaf would have been costly; but God made this gem easily available that the poor and rich can wear it alike.