Moss Agate / Scenic Agate
Quartz var. Chalcedony · Semi-Precious Gemstone / Decorative Stone
Crystal System
Trigonal, microcrystalline habit
Mineral Group
Silicates (Tectosilicate subgroup)
Chemical Formula
SiO2
Formation Process
Hydrothermal deposition and low-temperature precipitation in volcanic cavities and sedimentary rocks
About This Crystal
A polished crescent-shaped carving featuring translucent to semi-translucent chalcedony with intricate green, blue-grey, and earthy brown dendritic or moss-like inclusions resembling natural foliage or landscapes.
Physical Characteristics
Colors include blue-grey, green, and hints of brown; white streak; cleavage is absent; fracture is conchoidal; specific gravity is approximately 2.60 to 2.65; brittle tenacity; vitreous to waxy luster.
Optical Properties
Uniaxial positive with low birefringence; typically doubly refractive under polarized light; displays translucent to semi-translucent light transmission with internal dendritic inclusions.
Hardness & Durability
Origin Region
India, Madagascar, United States, and Brazil
Hardness & Durability
Mohs hardness of 6.5 to 7; good toughness and durability; stable under normal conditions; suitable for most jewelry applications.
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid harsh chemicals and prolonged exposure to direct sunlight; store separately to prevent scratching softer materials.
Rarity & Value
Common to uncommon; value depends on the beauty and clarity of the dendritic patterns, color contrast, and size; generally affordable.
Special Characteristics
Features striking dendritic and mossy inclusions formed by oxidized metal impurities like manganese and iron trapped within the microcrystalline quartz matrix.
Lore & History
Historically used as a talisman by ancient civilizations for agriculture and connection to nature; associated with the Heart Chakra in modern crystal lore, symbolizing abundance, new beginnings, and emotional balance (traditional beliefs).