Nephrite

Black Opal

Nephrite Vs Black Opal

Nephrite

Black Opal

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Astrology

Origin

China, Canada

Australia

Color

Green, Yellow, Brown, White, gray, Black

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

Streak

For which Rashi?

Planet

Element of Planets

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.90-3.101.97-2.22

1 7.18

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Fracture

Splintery, Granular

Conchoidal

Cleavage

None

Mohs Hardness

6-6.56-6.5

2 10

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Chemical Composition

Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

SiO 2 + H 2OUlrich Henn and Claudio C.

Optical Properties

Luster

Vitreous, Greasy

Pleochroism

None

Dispersion

0.010.01

0.005 1

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Transparency

Translucent

Transparent, Translucent

Refractive Index

1.600-1.6271.370-1.470

1 3.25

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Optic Character

Crystal System

monoclinic

Birefringence

0.027-9999

0 0.296

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Clarity

Translucent

Transparent

Benefits

Physical

Neurological

Aids in mental clarity and focus

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Emotional Balance

Transformation

Healing

Physical healing

Emotional healing

Qualities Associated

Healing

Mystery

Nephrite Vs Black Opal Fracture

Fracture is an important parameter when you compare Nephrite and Black Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Nephrite Vs Black Opal 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 Nephrite is Splintery and Granular. Black Opal fracture is Conchoidal.

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Nephrite Vs Black Opal Luster

A primary knowledge about Nephrite vs Black Opal 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. Nephrite exhibits Vitreous and Greasy luster.