Lazulite Vs Alexandrite
Origin
Brazil, Southern and central Africa
Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Color: color change, from bluish green (daylight) to purple, red or brown (incandescent light), Hardness: 8, Refractive index: 1.74 1.77, Density: 3.68 3.80, Chemical composition: BeAl2O4, Crystal structure: orthorhombic, Origins: Russia
Color
Blue, Green, Black
Green
Streak
White
Not Available
For which Rashi?
Gemini, Sagittarius
Scorpio
Element of Planets
Not Available
Earth
Energy
Projective
Projective, Receptive
Finger
Not Available
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Ring Metal
Not Available
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Deities
Gia
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Not to wear with
Not Available
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Powers
Not Available
Love
Planetary
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Talisman
Not Available
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Tenacity
Not Available
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.04-3.17
3.69-3.81
Fracture
Uneven, Gemstones of the world (2001) More from other references
Not Available
Cleavage
{001} Indistinct, {???} Indistinct
1,1 ; 3,2.
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
BeAl 2 O 4
Luster
Not Available
Vitreous
Pleochroism
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Not Available
Transparency
Transparent, Translucent
Transparent, Transparent to nearly opaque
Refractive Index
1.604-1.646
1.739-1.770
Optic Character
Not Available
Biaxial/+
Crystal System
monoclinic
Orthorhombic
Birefringence
0.031-0.036
0.007-0.010
Clarity
Transparent
Transparent
Neurological
Not Available
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
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Qualities Associated
Not Available
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Lazulite Vs Alexandrite Fracture
Fracture is an important parameter when you compare Lazulite and Alexandrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Lazulite Vs Alexandrite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Lazulite is Uneven and Gemstones of the world (2001) More from other references.
Lazulite Vs Alexandrite Luster
A primary knowledge about Lazulite vs Alexandrite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Alexandrite, on other hand, exhibits Vitreous luster.