Opal

Alexandrite

Opal Vs Alexandrite

Opal

Alexandrite

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1 Astrology

1.1 Origin

Ethiopia

Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Color: color change, from bluish green (daylight) to purple, red or brown (incandescent light), Hardness: 8, Refractive index: 1.74 1.77, Density: 3.68 3.80, Chemical composition: BeAl2O4, Crystal structure: orthorhombic, Origins: Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma

1.2 Color

Yellow, White, Red, Brown, Blue

Green

1.3 Streak

White

Not Available

1.4 For which Rashi?

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

Scorpio

1.5 Planet

Mercury

Venus

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

1.9 Deities

Cupid

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Astral Projection, Psychicism

Love

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

1.98-2.253.69-3.81

1 7.18

2.5 Fracture

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

Not Available

2.6 Cleavage

None

1,1 ; 3,2.

2.7 Mohs Hardness

5-6.58.5

2 10

2.8 Chemical Composition

SiO₂ · nH₂O

BeAl ₂ O ₄

3 Optical Properties

3.1 Luster

Vitreous, Pearly

Vitreous

3.2 Pleochroism

None

Not Available

3.3 Dispersion

NoneNA

0.007 1

3.4 Transparency

Transparent, Translucent, Transparent to translucent

Transparent, Transparent to nearly opaque

3.5 Refractive Index

1.37-1.521.739-1.770

1 3.25

3.6 Optic Character

Not Available

Biaxial/+

3.7 Crystal System

Trigonal

Orthorhombic

3.8 Birefringence

Not Available0.007-0.010

0 0.296

3.9 Clarity

Transparent

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 Alexandrite Fracture

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

Compare Semi Precious Gemstones

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Opal Vs Alexandrite Luster

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