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Powellite
Powellite

Alexandrite
Alexandrite



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Powellite
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Alexandrite

Powellite Vs Alexandrite

1 Astrology
1.1 Origin
India
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, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma
1.2 Color
Yellow, Greenish, Blue, Brown, Green, gray
Green
1.3 Streak
Yellow
Not Available
1.4 For which Rashi?
Not Available
Scorpio
1.5 Planet
Not Available
Venus
1.6 Element of Planets
Not Available
Earth
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
Not Available
1.8 Energy
Not Available
Projective, Receptive
1.9 Deities
Not Available
Not Available
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
Not Available
Love
1.12 Birthstone
1.12.1 Planetary
Not Available
Not Available
1.12.2 Talisman
Not Available
Not Available
2 Physical Properties
2.1 Tenacity
Not Available
Not Available
2.2 Solubility
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
4.233.69-3.81
Amber
1 7.18
2.5 Fracture
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Not Available
2.6 Cleavage
{111} Distinct
1,1 ; 3,2.
2.7 Mohs Hardness
3.5-48.5
Amber
2 10
2.8 Chemical Composition
CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
BeAl 2 O 4
3 Optical Properties
3.1 Luster
Greasy, Subadamantine
Vitreous
3.2 Pleochroism
In deeply colored specimens: blue greenAnthony et al
Not Available
3.3 Dispersion
NANA
Fluorite
0.007 1
3.4 Transparency
Transparent
Transparent, Transparent to nearly opaque
3.5 Refractive Index
1.974-1.9841.739-1.770
Agate Opal
1 3.25
3.6 Optic Character
Not Available
Biaxial/+
3.7 Crystal System
Not Available
Orthorhombic
3.8 Birefringence
Not Available0.007-0.010
Achroite
0 0.296
3.9 Clarity
Transparent
Transparent
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
Not Available
4.1.2 Cardiovascular
Not Available
Not Available
4.1.3 Respiratory
Not Available
Not Available
4.1.4 Reproductive
Not Available
Not Available
4.1.5 Digestive
Not Available
Not Available
4.2 Psychology
Not Available
Not Available
4.3 Healing
Not Available
Not Available
4.4 Qualities Associated
Not Available
Not Available

Powellite Vs Alexandrite Fracture

Fracture is an important parameter when you compare Powellite and Alexandrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Powellite 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 Powellite is Brittle, Conchoidal, Handbook of mineralogy (2001), Handbook of mineralogy (2001), UnevenAnthony et al and UnevenAnthony et al.

Powellite Vs Alexandrite Luster

A primary knowledge about Powellite 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. Powellite exhibits Greasy and Subadamantine luster. Alexandrite, on other hand, exhibits Vitreous luster.