Quartz Stone Mineral Appraised by Smartphone App Power Stone Gemstones 6 pieces in total, various sizes

No certificate of authenticity.
Can be bundled with other stones I am listing.
Please examine the photos and purchase if you are knowledgeable about stones.

Quartz (Silicon Dioxide, Quartz) - Birthstone for April
Quartz

Purification / Exorcism / Mental Strength / Vitality

Composition: SiO2
Hardness: 7
Origin: Brazil, China, etc.
Recommended for:
Recommended for all ages and genders.

Mineralogical Characteristics
Quartz is a hexagonal columnar crystal made of silicon dioxide, and can also be found in massive, granular, or nodular forms. While various colors exist due to mixed minerals or chemical reactions, including white, gray, red, purple, pink, yellow, green, black, and brown, this listing introduces colorless and transparent quartz.

Meaning and Power of the Stone
This is a stone with universal power, and its main effects are said to calm disturbed environments and restless feelings. It creates harmony, integrates and strengthens them, and helps to bring together and bind together disparate elements. It purifies the mind and encourages respect for social morals and adherence to rules.

Furthermore, it is said to invigorate metabolism, promote cell regeneration, and enhance immunity, making it ideal for physical recovery after surgery.