Howlite

Lapis lazuli

Howlite Vs Lapis lazuli

Howlite

Lapis lazuli

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1 Astrology

1.1 Origin

Southern and central Africa

Afghanistan

1.2 Color

Blue, Colorless, White

Violet, Blue, White

1.3 Streak

White

Blue

1.4 For which Rashi?

Gemini, Virgo, Gemini, Virgo, Gemini, Virgo

Sagittarius

1.5 Planet

Moon

Venus

1.6 Element of Planets

Earth

Water

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Not Available

Receptive

1.9 Deities

Quan Yin

Venus

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

Protection, Courage

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

2.45-2.582.50-3.00

1 7.18

2.5 Fracture

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

Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

2.6 Cleavage

None

3,6

2.7 Mohs Hardness

3-3.55.5

2 10

2.8 Chemical Composition

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

The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄

3 Optical Properties

3.1 Luster

Vitreous

Vitreous, Greasy

3.2 Pleochroism

NilArthur Thomas

AbsentWalter Schumann

3.3 Dispersion

NANone

0.007 1

3.4 Transparency

Gemmological Tables (2004) More from other references

Opaque

3.5 Refractive Index

1.583-1.6081.500-1.670

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

monoclinic

Trigonal

3.8 Birefringence

0.019Not Available

0 0.296

3.9 Clarity

Gemmological Tables (2004) More from other references

Gemstones of the world (2001)

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

Howlite Vs Lapis lazuli Fracture

Fracture is an important parameter when you compare Howlite and Lapis lazuli Physical Properties. It is necessary to understand the significance of these properties, before you compare Howlite Vs Lapis lazuli 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 Howlite is Brittle, Conchoidal, Gemstones (2009), Gemstones (2009), UnevenArthur Thomas and UnevenArthur Thomas. Lapis lazuli fracture is ConchoidalWalter Schumann, Gemstones of the world (2001) and Uneven-Conchoidal.

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Howlite Vs Lapis lazuli Luster

A primary knowledge about Howlite vs Lapis lazuli 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. Howlite exhibits Vitreous luster. Lapis lazuli, on other hand, exhibits Greasy and Vitreous luster.