Dravite

Polyhalite

Dravite Vs Polyhalite

Dravite

Polyhalite

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1 Astrology

1.1 Origin

Southern and central Africa

Austria

1.2 Color

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

Colorless, White, Red, gray, pink

1.3 Streak

Colorless

White

1.4 For which Rashi?

Not Available

1.5 Planet

Not Available

1.6 Element of Planets

Not Available

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Not Available

1.9 Deities

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Not Available

Brittle

2.2 Solubility

Not Available

Soluble

2.3 Durability

Not Available

2.4 Specific Gravity

3.03-3.182.78

1 7.18

2.5 Fracture

Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Conchoidal, Brittle

2.6 Cleavage

{???} Indistinct

Perfect on {10 1 }; parting on {010}

2.7 Mohs Hardness

7-7.53.5

2 10

2.8 Chemical Composition

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

Not Available

3 Optical Properties

3.1 Luster

Vitreous

Vitreous, Resinous

3.2 Pleochroism

Very strong: pale yellow colorless

Not Available

3.3 Dispersion

0.02NA

0.007 1

3.4 Transparency

Transparent

Not Available

3.5 Refractive Index

1.614-1.6661.546-1.548

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

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

Triclinic

3.8 Birefringence

0.014-0.0320.021

0 0.296

3.9 Clarity

Transparent

Not Available

4 Benefits

4.1 Physical

4.1.1 Neurological

Not Available

4.1.2 Cardiovascular

Not Available

4.1.3 Respiratory

Not Available

4.1.4 Reproductive

Not Available

4.1.5 Digestive

Not Available

4.2 Psychology

Not Available

4.3 Healing

Not Available

4.4 Qualities Associated

Not Available

Dravite Vs Polyhalite Fracture

Fracture is an important parameter when you compare Dravite and Polyhalite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dravite Vs Polyhalite 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 Dravite is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Irregular, Uneven and Uneven. Polyhalite fracture is Brittle and Conchoidal.

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Dravite Vs Polyhalite Luster

A primary knowledge about Dravite vs Polyhalite 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. Dravite exhibits Vitreous luster. Polyhalite, on other hand, exhibits Resinous and Vitreous luster.