Bertrandite

Howlite

Bertrandite Vs Howlite

Bertrandite

Howlite

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1 Astrology

1.1 Origin

Not Available, Southern and central Africa

Southern and central Africa

1.2 Color

Colorless, Colorless, Yellow

Blue, Colorless, White

1.3 Streak

White

1.4 For which Rashi?

Not Available

Gemini, Virgo, Gemini, Virgo, Gemini, Virgo

1.5 Planet

Not Available

Moon

1.6 Element of Planets

Not Available

Earth

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

Quan Yin

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

2.59-2.602.45-2.58

1 7.18

2.5 Fracture

Brittle, Metallic, Brittle, Metallic

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

2.6 Cleavage

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

None

2.7 Mohs Hardness

6-73-3.5

2 10

2.8 Chemical Composition

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

Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

3 Optical Properties

3.1 Luster

Vitreous

3.2 Pleochroism

none.

NilArthur Thomas

3.3 Dispersion

NANA

0.007 1

3.4 Transparency

TransparentAnthony et al, Handbook of mineralogy (2001)

Gemmological Tables (2004) More from other references

3.5 Refractive Index

1.583-1.6141.583-1.608

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

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

monoclinic

3.8 Birefringence

Not Available0.019

0 0.296

3.9 Clarity

TransparentAnthony et al

Gemmological Tables (2004) More from other references

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 Howlite Fracture

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

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Bertrandite Vs Howlite Luster

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