Agate, Banded, Black


Black Agate is a banded microcrystalline form of Quartz, it has no visible crystals. Its chemical formula is SiO2 i.e. Silicon dioxide, a common material found even in our own human bodies. It has a hexagonal crystal system. It is found in all mineral environments but is most prevalent in igneous rocks such as basalt.

Found in Botswana

  • Use for self-control, grounding, resilience, quiet power and peace.
  • Brings calm, soothing energy and is useful for inward meditation.
  • Help obtain physical/emotional balance, and raises self-confidence.
  • Enables wearer to choose their friends carefully.
Hardness: 6.5-7 
Mohs Specific Gravity: 2.57-2.64 
Refractive Index: 1.53-1.55

Michelle Ferris

Owner, curator, and buyer for Crystallography Gems. The brick and mortar shop is relatively new, and has been around since 2021 in Seattle's Georgetown neighborhood. Our presence as a business and as a rock and gem show has been longstanding, since 2013.Our shop offers crystals, minerals, gems, rocks, jewelry, and metaphysical tools. We work hard to inform our customers, giving them the education they need to be confident, intuitive, and wise collectors of crystals and minerals.