Iolite

Bertrandite

Iolite Vs Bertrandite

Iolite

Bertrandite

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Astrology

Origin

Brazil, USA, Canada, Madagascar, Sri Lanka, India, Burma

Southern and central Africa

Color

Blue, Violet, Yellow, Grey

Colorless, Yellow

Streak

White

For which Rashi?

Libra, Sagittarius, Taurus

Planet

Jupiter

Element of Planets

Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.6-2.72.59-2.60

1 7.18

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Fracture

Cleavage

3,1

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

Mohs Hardness

7-7.56-7

2 10

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Chemical Composition

Mg₂Al₄Si₅O₁₈

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

Optical Properties

Luster

Vitreous

Pleochroism

none.

Dispersion

0.020.01

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

TransparentAnthony et al

Refractive Index

1.52-1.561.583-1.614

1 3.25

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Optic Character

Crystal System

Orthorhombic

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

Birefringence

-9999-9999

0 0.296

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Clarity

Transparent to translucent

TransparentAnthony et al

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Supports heart health

Promotes mental clarity

Respiratory

Excellent

Reproductive

Digestive

Supports digestive health

Psychology

Intuition

Harmony

Healing

Emotional healing

Qualities Associated

Intuition

Creativity

Iolite Vs Bertrandite Fracture

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

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Iolite Vs Bertrandite Luster

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