Jadeite
Jadeite (Pyroxene Group) · Precious Gemstone / Semi-Precious Gemstone
Crystal System
Monoclinic; typically found in massive, granular, or fibrous habits rather than distinct crystals.
Mineral Group
Silicates (Inosilicate; Pyroxene group)
Chemical Formula
NaAlSi2O6
Formation Process
Metamorphic; typically found in serpentinite-associated rocks formed in subduction zones at high pressures but relatively low temperatures.
About This Crystal
The specimen is a polished teardrop bead showing a mottled, sage to olive green color with a translucent to opaque clarity. It displays a greasy to vitreous luster and a 'shagreen' or interlocking granular texture characteristic of jadeite.
Physical Characteristics
Color: Sage green; Streak: White; Cleavage: Two directions at nearly 90 degrees (rarely seen in massive forms); Fracture: Splintery to uneven; Specific Gravity: 3.25–3.36; Fluorescence: Generally inert, occasionally faint whitish-green under LWUV.
Optical Properties
Refractive Index: 1.660–1.680; Birefringence: 0.012–0.020; Pleochroism: Weak; Optical Phenomenon: Sometimes exhibits a slight glow or 'watery' appearance in high-quality translucent material.
Hardness & Durability
Origin Region
Primary sources include Myanmar (Burma), Guatemala, Russia, and Japan. It forms in high-pressure, low-temperature metamorphic environments.
Hardness & Durability
Mohs Hardness: 6.5–7.0; Toughness: Very High (due to interlocking grain structure); Stability: Stable to light and most chemicals, but sensitive to extreme heat.
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid ultrasonic cleaners or steamers which may disturb surface-reaching fractures or wax treatments; store away from harder stones like diamonds.
Rarity & Value
Varies by quality; 'Imperial Jade' is extremely rare/expensive, while commercial grade sage-green jadeite like this specimen is common and affordable. Treatments like bleaching and polymer impregnation (B-Jade) are common.
Special Characteristics
Exceptional toughness makes it nearly impossible to break by impact; characterized by a 'dimpled' surface when polished due to varying hardness of interlocking crystals.
Lore & History
Historically revered in Chinese and Mesoamerican cultures as a stone of royalty, longevity, and protection. Traditionally associated with the Heart Chakra and believed to bring good luck, prosperity, and emotional balance.