Howlite

Dravite

Howlite Vs Dravite

Howlite

Dravite

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Astrology

Origin

Southern and central Africa

Color

Blue, Colorless, White

White, Colorless, Blue, Red, Green, Yellow, Violet, Black

Streak

White

Colorless

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

2.45-2.583.03-3.18

1 7.18

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Fracture

Conchoidal

Uneven, Irregular, Conchoidal

Cleavage

None

{???} Indistinct

Mohs Hardness

3-3.57-7.5

2 10

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Chemical Composition

Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Optical Properties

Luster

Vitreous

Pleochroism

Very strong: pale yellow colorless

Dispersion

0.010.02

0.005 1

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Transparency

Transparent

Refractive Index

1.583-1.6081.614-1.666

1 3.25

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Optic Character

Crystal System

monoclinic

Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

Birefringence

0.0190.014-0.032

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

Self-acceptance

Healing

Emotional healing

Qualities Associated

Calming

Self-Exploration

Howlite Vs Dravite Fracture

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

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Howlite Vs Dravite Luster

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