About this stone
Color
GreenWhiteCreamPink
Origin
IndiaUSABrazilAustraliaUruguay
Mohs hardness
6.5–7
Treatment categories
Natural
Industry-standard treatment
Natural — green moss-like inclusions of iron and manganese are intrinsic to the rough
Mineral chemistry
Chalcedony hosting branching inclusions of iron oxide, manganese oxide, or chlorite
Crystal system
Trigonal
Stone family
Chalcedony
Common cuts
RoundRondelleSmooth
Common sizes
4mm6mm8mm10mm
Care notes
Durable (Mohs 6.5–7). Standard mild soap and soft cloth; suitable for any jewelry application.
Related stones
Tree Agate, Dendritic Agate, Chalcedony
Frequently asked questions
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What gives moss agate its green pattern?
The green branching patterns are mineral inclusions — oxides of iron, manganese, and chlorite — that crystallized inside the chalcedony as the stone formed. They are intrinsic to the rough and survive cutting and polishing unchanged. The patterns vary bead-to-bead within a single strand; that variation is a feature of the material, not a flaw. -
Where does moss agate come from?
India is the dominant commercial source for volume supply. The United States — particularly Montana, Wyoming, and Oregon — produces gem-grade material with cleaner translucent bases and more defined inclusion patterns. Brazil, Australia, and Uruguay also contribute material in smaller volumes. Origin is disclosed per strand where it is known. -
Is moss agate natural or dyed?
Moss agate at Dakota is natural across every strand — no dye, no color enhancement, no stabilization. The green inclusions are intrinsic to the rough. In the broader bead market, dye is uncommon on moss agate because the natural patterns are the buying signal; if you encounter moss agate with electric-green or candy-color saturation, that's a dye signal. -
What's the difference between moss agate and tree agate?
Both are agate varieties with green inclusions in a chalcedony base; the difference is the inclusion pattern. Moss agate has softer, more diffuse, more cloud-like green inclusions, typically in a more translucent base. Tree agate has sharper, more distinctly branching dendrite-like inclusions, typically in a more opaque white base. Designers choose between them by pattern register: moss for foliage-like atmosphere, tree for crisp dendrite structure. -
How durable is moss agate?
Mohs 6.5–7 — the standard chalcedony-family hardness. Durable enough for any jewelry application, including rings, bracelets, and necklaces in daily wear. Standard care is mild soap and a soft cloth; no special handling needed.