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Howlite
Howlite

Gedrite
Gedrite



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Howlite
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Gedrite

Howlite Vs Gedrite

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Astrology

Origin

Southern and central Africa
Southern and central Africa

Color

Blue, Colorless, White
Brown, Green, gray, White

Streak

White
gray, White

For which Rashi?

Gemini, Virgo
-

Planet

-
-

Element of Planets

Earth
-

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

Quan Yin
-

Not to wear with

-
-

Powers

-
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.45-2.583.15-3.259
1 7.18
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Fracture

Conchoidal
-

Cleavage

None
Gedrite   Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

Mohs Hardness

3-3.55.5-6
2 10
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Chemical Composition

Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Weak to moderate

Dispersion

0.010.02
0.005 1
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Transparency

-
Transparent

Refractive Index

1.583-1.6081.625-1.718
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

Birefringence

0.019-9999
0 0.296
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Clarity

-
Transparent

Benefits

Physical

Neurological

Aids in mental clarity and focus
-

Cardiovascular

-
-

Respiratory

Good
-

Reproductive

-
-

Digestive

-
-

Psychology

Calming
Focus

Healing

Emotional healing
-

Qualities Associated

Calming
Protection

Howlite Vs Gedrite Fracture

Fracture is an important parameter when you compare Howlite and Gedrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Howlite Vs Gedrite 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 Howlite is Conchoidal.

Howlite Vs Gedrite Luster

A primary knowledge about Howlite vs Gedrite 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. Howlite exhibits Vitreous luster. Gedrite, on other hand, exhibits Vitreous luster.