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Howlite
Howlite

Bytownite
Bytownite



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Howlite
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Bytownite

Howlite Vs Bytownite

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Astrology

Origin

Southern and central Africa
Canada, Southern and central Africa, Australia

Color

Blue, Colorless, White
Colorless, White, gray

Streak

White
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

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

2.45-2.582.72-2.75
1 7.18
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Fracture

Conchoidal
Uneven

Cleavage

None
Perfect on [001], good on [010], imperfect on [110]

Mohs Hardness

3-3.56-6.5
2 10
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Chemical Composition

Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

-
colorless.

Dispersion

0.010.01
0.005 1
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Transparency

-
Transparent

Refractive Index

1.583-1.6081.561-1.583
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Triclinic

Birefringence

0.0190.010-0.011
0 0.296
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Clarity

-
Transparent

Benefits

Physical

Neurological

Aids in mental clarity and focus
-

Cardiovascular

-
-

Respiratory

Good
Poor

Reproductive

-
-

Digestive

-
-

Psychology

Calming
Clarity

Healing

Emotional healing
Emotional healing

Qualities Associated

Calming
Clarity

Howlite Vs Bytownite Fracture

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

Howlite Vs Bytownite Luster

A primary knowledge about Howlite vs Bytownite 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. Bytownite, on other hand, exhibits Vitreous and Pearly luster.