Sellaite

Bertrandite

Sellaite Vs Bertrandite

Sellaite

Bertrandite

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Astrology

Origin

Brazil

Southern and central Africa

Color

Colorless, White

Colorless, Yellow

Streak

White

For which Rashi?

Planet

Element of Planets

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.14-3.162.59-2.60

1 7.18

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Fracture

Conchoidal

Cleavage

Perfect on {010} and {110}

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

Mohs Hardness

5-5.56-7

2 10

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Chemical Composition

MgF 2Ulrich Henn and Claudio C.

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

Optical Properties

Luster

Vitreous

Pleochroism

none.

Dispersion

0.030.01

0.005 1

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Transparency

Transparent

TransparentAnthony et al

Refractive Index

1.378-1.3901.583-1.614

1 3.25

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Optic Character

Crystal System

tetragonal

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

Birefringence

0.012-9999

0 0.296

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Clarity

Transparent

TransparentAnthony et al

Benefits

Physical

Neurological

Cardiovascular

Promotes mental clarity

Respiratory

Reproductive

Digestive

Psychology

Harmony

Healing

Emotional healing

Qualities Associated

Emotional Healing

Creativity

Sellaite Vs Bertrandite Fracture

Fracture is an important parameter when you compare Sellaite and Bertrandite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sellaite 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 Sellaite is Conchoidal.

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Sellaite Vs Bertrandite Luster

A primary knowledge about Sellaite 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. Sellaite exhibits Vitreous luster. Bertrandite, on other hand, exhibits Vitreous luster.