Jadeite
Jadeite (Pyroxene Group) · Precious Gemstone (High-quality Jadeite is considered a top-tier precious gemstone)
Crystal System
Monoclinic; typically found in granular, fibrous, or interlocking microcrystalline massive habits
Mineral Group
Silicates; specifically Inosilicates (Chain Silicates) within the Pyroxene group
Chemical Formula
NaAlSi2O6 (Sodium Aluminum Silicate), often with Chromium (Cr) or Iron (Fe) as trace chromophores
Formation Process
Metamorphic; specifically high-pressure, low-temperature metamorphic conditions within subduction zones (Blueschist facies)
About This Crystal
The specimen consists of rounded beads displaying a mottled 'moss-in-snow' or oily green appearance. It is translucent to opaque with a greasy to vitreous luster and visible fibrous/granular texture.
Physical Characteristics
Color: Mottled green and greyish-green; Streak: White; Cleavage: Prismatic in crystals (rarely seen in massive form); Specific Gravity: 3.25–3.36; No fluorescence usually.
Optical Properties
Refractive Index: 1.666–1.680; Birefringence: 0.012–0.020; Aggregate structure causes it to be doubly refractive; No significant pleochroism in massive form.
Hardness & Durability
Origin Region
Myanmar (Burma) is the primary source; also found in Guatemala, Russia, and Japan. Formed in subduction zones.
Hardness & Durability
Mohs Hardness: 6.5–7.0. While slightly softer than quartz, it has exceptional toughness due to its interlocking fibrous structure, making it highly resistant to fracturing.
Care & Maintenance
Clean with warm soapy water and a soft brush. Avoid steam cleaners and ultrasonics if the stone is dyed or polymer-impregnated. Avoid harsh chemicals and sudden temperature changes.
Rarity & Value
Rare (high quality is extremely rare). Value is determined by transparency ('water'), color vividness, and texture. Treatments like bleaching and polymer impregnation (Type B) are common.
Special Characteristics
Displays a characteristic 'orange peel' surface texture when polished and possesses a unique 'felted' microscopic structure that grants it unmatched toughness among gemstones.
Lore & History
Deeply revered in Chinese culture for over 8,000 years as the 'Stone of Heaven.' Symbolizes longevity, purity, and protection. Historically used for ceremonial blades and high-status jewelry.