Opal

Howlite

Opal Vs Howlite

Opal

Howlite

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1 Astrology

1.1 Origin

Ethiopia

Southern and central Africa

1.2 Color

Yellow, White, Red, Brown, Blue

Blue, Colorless, White

1.3 Streak

White

1.4 For which Rashi?

Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio

Gemini, Virgo, Gemini, Virgo, Gemini, Virgo

1.5 Planet

Mercury

Moon

1.6 Element of Planets

Earth, Air, Water

Earth

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Projective, Receptive

Not Available

1.9 Deities

Cupid

Quan Yin

1.10 Not to wear with

Not Available

1.11 Powers

Astral Projection, Psychicism

Not Available

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

BrittleWalter Schumann

Not Available

2.2 Solubility

hot salt water

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

1.98-2.252.45-2.58

1 7.18

2.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle

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

2.6 Cleavage

None

2.7 Mohs Hardness

5-6.53-3.5

2 10

2.8 Chemical Composition

SiO₂ · nH₂O

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

3 Optical Properties

3.1 Luster

Vitreous, Pearly

Vitreous

3.2 Pleochroism

None

NilArthur Thomas

3.3 Dispersion

NoneNA

0.007 1

3.4 Transparency

Transparent, Translucent, Transparent to translucent

Gemmological Tables (2004) More from other references

3.5 Refractive Index

1.37-1.521.583-1.608

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Trigonal

monoclinic

3.8 Birefringence

Not Available0.019

0 0.296

3.9 Clarity

Transparent

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

Opal Vs Howlite Fracture

Fracture is an important parameter when you compare Opal and Howlite Physical Properties. It is necessary to understand the significance of these properties, before you compare Opal 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 Opal is Brittle, Conchoidal, Conchoidal and Gemstones of the world (2001) More from other references. Howlite fracture is Brittle, Conchoidal, Gemstones (2009), Gemstones (2009), UnevenArthur Thomas and UnevenArthur Thomas.

Compare Semi Precious Gemstones

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Opal Vs Howlite Luster

A primary knowledge about Opal 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. Opal exhibits Pearly and Vitreous luster. Howlite, on other hand, exhibits Vitreous luster.