Howlite

Spinel

Howlite Vs Spinel

Howlite

Spinel

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1 Astrology

1.1 Origin

Southern and central Africa

Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia

1.2 Color

Blue, Colorless, White

Blue, Violet, Colorless, Red, Green, Brown

1.3 Streak

White

1.4 For which Rashi?

Gemini, Virgo, Gemini, Virgo, Gemini, Virgo

Sagittarius, Scorpio, Sagittarius, Scorpio, Sagittarius, Scorpio

1.5 Planet

Moon

Pluto

1.6 Element of Planets

Earth

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

Projective

1.9 Deities

Quan Yin

Hephaestus

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

Money

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

none

2.3 Durability

Not Available

2.4 Specific Gravity

2.45-2.583.64-3.66

1 7.18

2.5 Fracture

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

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

2.6 Cleavage

None

None, but may exhibit slight parting

2.7 Mohs Hardness

3-3.58

2 10

2.8 Chemical Composition

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

MgAl₂O₄

3 Optical Properties

3.1 Luster

Vitreous

3.2 Pleochroism

NilArthur Thomas

Absent

3.3 Dispersion

NA0.02

0.007 1

3.4 Transparency

Gemmological Tables (2004) More from other references

Transparent, Translucent, Transparent to translucent

3.5 Refractive Index

1.583-1.6081.73

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

monoclinic

Isometric

3.8 Birefringence

0.019Not Available

0 0.296

3.9 Clarity

Gemmological Tables (2004) More from other references

TransparentUlrich Henn and Claudio C. Milisenda

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 Spinel Fracture

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

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Howlite Vs Spinel Luster

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