Fancy Jasper
Microcrystalline Quartz (Jasper variety) · Semi-Precious Gemstone
Crystal System
Trigonal symmetry but occurs as a microcrystalline / cryptocrystalline aggregate; typically massive or tumbled habit
Mineral Group
Silicates (Tectosilicate)
Chemical Formula
SiO2 (Silicon Dioxide) with impurities of Hematite, Goethite, and Chlorite
Formation Process
Sedimentary/Hydrothermal; formed as silica-rich fluids permeate through volcanic ash or sedimentary rock, precipitating within pores and cracks
About This Crystal
An opaque, microcrystalline stone appearing in a variegated range of earthy greens, mauves, creams, and purples. It exhibits a waxy to vitreous luster when polished and shows 'mottled' or 'speckled' patterns on smooth surfaces.
Physical Characteristics
Color: Multicolored (Green, Red, Tan, Purple); 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: 0.009; Pleochroism: None; Diaphaneity: Opaque
Hardness & Durability
Origin Region
India, Brazil, and South Africa; typically found in sedimentary and volcanic environments
Hardness & Durability
Mohs Hardness: 6.5 - 7.0; Toughness: Very high due to cryptocrystalline structure; suitable for daily jewelry wear
Care & Maintenance
Clean with warm soapy water and a soft cloth; avoids steam cleaning and harsh chemicals; store separately to prevent scratching softer stones
Rarity & Value
Common; value is determined by the vibrancy of color colors and pattern aesthetics; very affordable and often used in beads and carvings
Special Characteristics
Displays a unique 'calico' or 'patchwork' color distribution caused by different mineral inclusions within the same silica matrix
Lore & History
Historically known as the 'Stone of Tranquility.' In ancient cultures, it was used for amulets to ensure grounding. Traditional lore associates it with the Root and Heart chakras for emotional balance and focus.