Oval mineral of 3.5 to 4.5 centimeters. Being a natural product, the pieces will be similar to those in the photo. Crystal quartz is one of the most versatile and widely used stones in the esoteric field. Some of its esoteric properties include: 1. Energy amplification: Crystal quartz is considered an energy amplifier, meaning it can enhance and strengthen the energy of other crystals and objects. 2. Mental clarity: It is believed that crystal quartz can help achieve mental clarity and improve concentration. It is also said to help clear the mind of negative thoughts and promote focus and clear decision-making. 3. Chakra harmonization: Crystal quartz is commonly used to balance and harmonize the chakras, the body's energy centers. It is believed to help unblock and purify the chakras, thus promoting greater balance and well-being. 4. Energy protection: Crystal quartz is considered to have protective properties and can help repel negative energies and the evil eye. It is also said to strengthen a person's energy field, providing greater spiritual protection. 5. Amplification of intuition: Crystal quartz is associated with intuition and is believed to help increase intuitive perception and connection with inner wisdom.