Andalusite

Dravite

Andalusite Vs Dravite

Andalusite

Dravite

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Astrology

Origin

Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)

Southern and central Africa

Color

Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red

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

Streak

White

Colorless

For which Rashi?

Planet

Venus

Element of Planets

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.05-3.213.03-3.18

1 7.18

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Fracture

Uneven, Subconchoidal, Splintery

Uneven, Irregular, Conchoidal

Cleavage

Good on {110}, poor on {100}

{???} Indistinct

Mohs Hardness

7.57-7.5

2 10

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Chemical Composition

Al 2SiO 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, Greasy

Vitreous

Pleochroism

strongly trichroic

Very strong: pale yellow colorless

Dispersion

0.020.02

0.005 1

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Transparency

Transparent, Translucent

Transparent

Refractive Index

1.627-1.6501.614-1.666

1 3.25

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Optic Character

Crystal System

Orthorhombic

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

Birefringence

0.009-0.0100.014-0.032

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Supports heart health

Respiratory

Excellent

Reproductive

Digestive

Psychology

Perception

Self-acceptance

Healing

Physical healing

Emotional healing

Qualities Associated

Self-Realization

Self-Exploration

Andalusite Vs Dravite Fracture

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

Compare Brown Gemstones

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Andalusite Vs Dravite Luster

A primary knowledge about Andalusite 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. Andalusite exhibits Vitreous and Greasy luster. Dravite, on other hand, exhibits Vitreous luster.