Almandine

Bertrandite

Almandine Vs Bertrandite

Almandine

Bertrandite

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1 Astrology

1.1 Origin

Austria, Brazil, Canada, India, Madagascar, Russia, Sri Lanka, USA

Not Available, Southern and central Africa

1.2 Color

Red, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black

Colorless, Colorless, Yellow

1.3 Streak

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

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

3.95-4.302.59-2.60

1 7.18

2.5 Fracture

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Brittle, Metallic, Brittle, Metallic

2.6 Cleavage

none

{001} Perfect, {110} Distinct, {101} Distinct

2.7 Mohs Hardness

7-7.56-7

2 10

2.8 Chemical Composition

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

3 Optical Properties

3.1 Luster

Greasy, Vitreous

Vitreous

3.2 Pleochroism

None

none.

3.3 Dispersion

0.03NA

0.007 1

3.4 Transparency

Gemmological Tables (2004) More from other references

TransparentAnthony et al, Handbook of mineralogy (2001)

3.5 Refractive Index

1.770-1.8201.583-1.614

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

cubic

Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21

3.8 Birefringence

Not AvailableNot Available

0 0.296

3.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

TransparentAnthony et al

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

Almandine Vs Bertrandite Fracture

Fracture is an important parameter when you compare Almandine and Bertrandite Physical Properties. It is necessary to understand the significance of these properties, before you compare Almandine Vs Bertrandite 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 Almandine is Brittle, Brittle, Brittle, Conchoidal, Conchoidal, Conchoidal, Conchoidal, ConchoidalArthur Thomas and Gemstones (2009). Bertrandite fracture is Brittle, Brittle, Metallic and Metallic.

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Almandine Vs Bertrandite Luster

A primary knowledge about Almandine vs Bertrandite 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. Almandine exhibits Greasy and Vitreous luster. Bertrandite, on other hand, exhibits Vitreous luster.