Sapphire

Howlite

Sapphire Vs Howlite

Sapphire

Howlite

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Astrology

Origin

Burma, Sri Lanka, India, Madagascar, Kenya, Tanzania, Thailand, Cambodia, China, Australia, USA

Southern and central Africa

Color

Colorless, Yellow, Green, Violet, White, Blue, Red, pink

Blue, Colorless, White

Streak

White

For which Rashi?

Pisces, Taurus, Gemini, Libra

Gemini, Virgo

Planet

Saturn

Element of Planets

Water

Earth

Energy

How to Wear?

Finger

Ring Metal

Deities

Apollo

Quan Yin

Not to wear with

Powers

Psychic Power

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Solubility

insoluble

Durability

Specific Gravity

3.95-4.032.45-2.58

1 7.18

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Fracture

Uneven

Conchoidal

Cleavage

None, but may exhibit parting

None

Mohs Hardness

93-3.5

2 10

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Chemical Composition

Al ₂ O ₃

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

Optical Properties

Luster

Vitreous, Adamantine

Vitreous

Pleochroism

Strong

Dispersion

0.020.01

0.005 1

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Transparency

Transparent, Translucent, Transparent to opaque

Refractive Index

1.762-1.7881.583-1.608

1 3.25

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Optic Character

Crystal System

Trigonal

monoclinic

Birefringence

0.008-0.0090.019

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Aids in mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Intuition

Calming

Healing

Emotional healing

Qualities Associated

Wisdom

Calming

Sapphire Vs Howlite Fracture

Fracture is an important parameter when you compare Sapphire and Howlite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sapphire 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 Sapphire is Uneven. Howlite fracture is Conchoidal.

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Sapphire Vs Howlite Luster

A primary knowledge about Sapphire 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. Sapphire exhibits Vitreous and Adamantine luster. Howlite, on other hand, exhibits Vitreous luster.