Agate, Banded, Black

  • Tumbled Black Banded Agate
Black Banded Agate Tumbled bowl


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

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Michelle Ferris

Michelle Ferris is the owner, curator, and buyer for Crystal Lounge by Crystallography Gems. Born & raised in Seattle by first-generation parents, she has worked to create authentic, connective, and inclusive events for the better portion of her professional life. Since 2013, Michelle worked to create community-activated Rock, Gem, Art, & Music shows, at which Crystallography Gems was a cornerstone. At the start of the pandemic, moved her operation online, and opened a shop in Georgetown, expanding into a larger showroom in 2022. In November 2023, she moved her shop to downtown Seattle, rebranding it as Crystal Lounge by Crystallography Gems. Her shop offers crystals, minerals, gems, rocks, jewelry, and metaphysical tools, and focuses on getting her customers the tools they need, and the education needed for them to make informed, confident decisions about their purchases.