Agate, Moss

Moss agate is a semi-precious gemstone formed from silicon dioxide, with minerals of a green color forming filaments and other patterns in the stone suggestive of moss. The field is a clear or milky-white quartz, and the included minerals are mainly oxides of manganese or iron. It is not a true form of agate, because it does not have concentric banding. The moss-like dendritic inclusions are formed due to trace amounts of metals present, such as chrome or iron. The metals can make different colors depending on their valence (oxidation state). Moss agate is usually formed from weathered volcanic rocks.

Agate, Green Moss $2
  • – Stone of new beginnings.
  • – Emotional, physical & intellectual balance; stabilizes physical energy.
  • – See the beauty in all you behold.
  • – Attracts abundance & self-expression.
  • – Releases fear & deep-seated stress.
  • – Expand personal space & growth.
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.