Common Opal

Alexandrite

Common Opal Vs Alexandrite

Common Opal

Alexandrite

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Astrology

Origin

Southern and central Africa

Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Origins: Russia

Color

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

Green

Streak

For which Rashi?

Scorpio

Planet

Venus

Element of Planets

Earth

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Love

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

1.98-2.503.69-3.81

1 7.18

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Fracture

Conchoidal

Cleavage

None

1,1 ; 3,2.

Mohs Hardness

5.5-6.58.5

2 10

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Chemical Composition

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

BeAl ₂ O ₄

Optical Properties

Luster

Vitreous

Pleochroism

Dispersion

0.010.02

0.005 1

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Transparency

Translucent

Transparent, Transparent to nearly opaque

Refractive Index

1.37-1.521.739-1.770

1 3.25

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Optic Character

Biaxial/+

Crystal System

Orthorhombic

Birefringence

-99990.007-0.010

0 0.296

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Clarity

Translucent

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Aids in grounding and protection

Respiratory

Good

Excellent

Reproductive

Supports reproductive health

Digestive

Psychology

Creativity

Transformation

Healing

Emotional healing

Qualities Associated

Creativity

Transformation

Common Opal Vs Alexandrite Fracture

Fracture is an important parameter when you compare Common Opal and Alexandrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Common Opal Vs Alexandrite 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 Common Opal is Conchoidal.

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Common Opal Vs Alexandrite Luster

A primary knowledge about Common Opal vs Alexandrite 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. Alexandrite, on other hand, exhibits Vitreous luster.