Purple Imperial Jasper (Sea Sediment Jasper)
Silicon Dioxide (Microcrystalline Quartz) var. Jasper · Semi-Precious Gemstone; Decorative Stone
Crystal System
Trigonal/Hexagonal; usually occurs in massive or microcrystalline aggregates without visible crystal faces (cryptocrystalline).
Mineral Group
Silicates (Tectosilicates); Quartz group
Chemical Formula
SiO2 (with substantial impurities of iron, clay, and manganese; also impregnated with dye/polymer resins)
Formation Process
Originally formed via sedimentary deposition of silica-rich fluids in volcanic ash or limestone cavities; the specific appearance in the image is further enhanced by industrial stabilization and dyeing.
About This Crystal
Heart-shaped cabochon featuring a mottled, brecciated pattern. It displays a vibrant purple-blue color with dark matrix veins and golden-brown inclusions. The luster is vitreous to waxy, and the stone is opaque.
Physical Characteristics
Color: Indigo and purple with brown veining; Streak: White or colorless; Cleavage: None; Fracture: Conchoidal; Specific Gravity: 2.58–2.91; Fluorescence: Typically inert, though dyes may fluoresce under UV.
Optical Properties
Refractive Index: 1.544–1.553; Birefringence: 0.009; Pleochroism: None; Optical character: Aggregate (singly refractive in polariscope view).
Hardness & Durability
Origin Region
Mexico (Guadalajara region) and China (for processing); forms in volcanic or sedimentary environments.
Hardness & Durability
Mohs hardness: 6.5–7; Toughness: Fair to good; Stability: Generally stable but dyes may fade in heat or strong light.
Care & Maintenance
Wash with warm, soapy water; avoid ultrasonic cleaners or steam as resins/dyes can be damaged. Store away from direct sunlight to prevent color fading.
Rarity & Value
Common; Value is generally low ($5–$15 for a specimen of this size). Value depends on pattern consistency; most 'Sea Sediment' variety is heavily treated.
Special Characteristics
Brecciated texture (natural fragments cemented by silica); color-enhanced via polymer impregnation and purple dyeing to highlight the natural matrix.
Lore & History
Historically, Jasper was known as the 'Supreme Nurturer.' Modern lore associate Purple Jasper with the Crown and Third Eye chakras, believed to promote spiritual connection and inner peace.