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Bytownite
Bytownite

Howlite
Howlite



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Bytownite
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Howlite

Bytownite Vs Howlite

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Astrology

Origin

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

Color

Colorless, White, gray
Blue, Colorless, White

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

2.72-2.752.45-2.58
1 7.18
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Fracture

Uneven
Conchoidal

Cleavage

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

Mohs Hardness

6-6.53-3.5
2 10
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Chemical Composition

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

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

colorless.
-

Dispersion

0.010.01
0.005 1
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Transparency

Transparent
-

Refractive Index

1.561-1.5831.583-1.608
1 3.25
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Optic Character

-
-

Crystal System

Triclinic
monoclinic

Birefringence

0.010-0.0110.019
0 0.296
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Clarity

Transparent
-

Benefits

Physical

Neurological

-
Aids in mental clarity and focus

Cardiovascular

-
-

Respiratory

Poor
Good

Reproductive

-
-

Digestive

-
-

Psychology

Clarity
Calming

Healing

Emotional healing
Emotional healing

Qualities Associated

Clarity
Calming

Bytownite Vs Howlite Fracture

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

Bytownite Vs Howlite Luster

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