Bertrandite

Andalusite

Bertrandite Vs Andalusite

Bertrandite

Andalusite

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Astrology

Origin

Southern and central Africa

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

Color

Colorless, Yellow

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

Streak

White

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

2.59-2.603.05-3.21

1 7.18

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Fracture

Uneven, Subconchoidal, Splintery

Cleavage

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

Good on {110}, poor on {100}

Mohs Hardness

6-77.5

2 10

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Chemical Composition

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

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Optical Properties

Luster

Vitreous

Vitreous, Greasy

Pleochroism

none.

strongly trichroic

Dispersion

0.010.02

0.005 1

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Transparency

TransparentAnthony et al

Transparent, Translucent

Refractive Index

1.583-1.6141.627-1.650

1 3.25

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Optic Character

Crystal System

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

Orthorhombic

Birefringence

-99990.009-0.010

0 0.296

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Clarity

TransparentAnthony et al

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Promotes mental clarity

Supports heart health

Respiratory

Excellent

Reproductive

Digestive

Psychology

Harmony

Perception

Healing

Emotional healing

Physical healing

Qualities Associated

Creativity

Self-Realization

Bertrandite Vs Andalusite Fracture

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

Compare Colorless Gems

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Bertrandite Vs Andalusite Luster

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