Bertrandite

Black Opal

Bertrandite Vs Black Opal

Bertrandite

Black Opal

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1 Astrology

1.1 Origin

Not Available, Southern and central Africa

Australia

1.2 Color

Colorless, Colorless, Yellow

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

1.3 Streak

White

Not Available

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

2.59-2.601.97-2.22

1 7.18

2.5 Fracture

Brittle, Metallic, Brittle, Metallic

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

2.6 Cleavage

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

Not Available

2.7 Mohs Hardness

6-76-6.5

2 10

2.8 Chemical Composition

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

SiO 2 + H 2OUlrich Henn and Claudio C.

3 Optical Properties

3.1 Luster

Vitreous

Not Available

3.2 Pleochroism

none.

AbsentWalter Schumann

3.3 Dispersion

NANone

0.007 1

3.4 Transparency

TransparentAnthony et al, Handbook of mineralogy (2001)

Transparent, Translucent

3.5 Refractive Index

1.583-1.6141.370-1.470

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

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

Not Available

3.8 Birefringence

Not AvailableNot Available

0 0.296

3.9 Clarity

TransparentAnthony et al

Transparent

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

Bertrandite Vs Black Opal Fracture

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

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Bertrandite Vs Black Opal Luster

A primary knowledge about Bertrandite vs Black Opal 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.