Demantoid

Bertrandite

Demantoid Vs Bertrandite

Demantoid

Bertrandite

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1 Astrology

1.1 Origin

Italy

Not Available, Southern and central Africa

1.2 Color

Green

Colorless, Colorless, Yellow

1.3 Streak

Not Available

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

3.77-3.952.59-2.60

1 7.18

2.5 Fracture

Not Available

Brittle, Metallic, Brittle, Metallic

2.6 Cleavage

Not Available

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

2.7 Mohs Hardness

6.56-7

2 10

2.8 Chemical Composition

Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

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

3 Optical Properties

3.1 Luster

Adamantine

Vitreous

3.2 Pleochroism

None

none.

3.3 Dispersion

NANA

0.007 1

3.4 Transparency

Gemmological Tables (2004)

TransparentAnthony et al, Handbook of mineralogy (2001)

3.5 Refractive Index

1.880-1.8901.583-1.614

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

Demantoid Vs Bertrandite Fracture

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

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Demantoid Vs Bertrandite Luster

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