Fancy Jasper
Quartz (Microcrystalline variety Jasper) · Semi-Precious Gemstone / Decorative Stone
Crystal System
Trigonal (Microcrystalline / Cryptocrystalline); typically occurs in massive habits
Mineral Group
Silicates (Tectosilicate)
Chemical Formula
SiO2 (Silicon Dioxide) with impurities of Iron Oxide, Chlorite, and Manganese
Formation Process
Formed via hydrothermal precipitation of silica-rich fluids in volcanic cavities or as replacement in sedimentary rocks at low temperatures
About This Crystal
A dense, opaque variety of chalcedony with a smooth, waxy to vitreous luster. This specimen displays a 'Fancy' or polychrome pattern with swirling shades of burgundy, forest green, Cream, and mauve in a mottled, tumbled form.
Physical Characteristics
Color: Multi-colored (red, green, beige); Streak: White; Cleavage: None; Fracture: Conchoidal to uneven; Specific Gravity: 2.58–2.91; Fluorescence: Typically inert
Optical Properties
Refractive Index: 1.544–1.553; Birefringence: None (aggregate); Pleochroism: None; Optical character: Opaque; Phenomenon: None
Hardness & Durability
Origin Region
India, Brazil, Madagascar, and Africa; found primarily in volcanic and sedimentary environments
Hardness & Durability
Mohs Hardness: 6.5–7; Toughness: Very high due to microcrystalline structure; Stability: Highly stable under normal conditions
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid harsh chemicals and ultrasonic cleaners if the stone has surface-reaching fractures; store away from harder gems like Diamond
Rarity & Value
Common; Value is generally low to moderate, determined by color patterns and polish quality; usually sold as tumbled stones or cabochons
Special Characteristics
Displays 'landscape' or 'fancy' mottling caused by the heterogeneous distribution of mineral inclusions like hematite and chlorite
Lore & History
Historically used for seals and amulets in ancient civilizations; traditionally known as the 'Stone of Tranquility,' believed in lore to assist with focus, grounding, and balancing emotional energies