Opal

Calcite

Opal Vs Calcite

Opal

Calcite

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1 Astrology

1.1 Origin

Ethiopia

Mexico

1.2 Color

Yellow, White, Red, Brown, Blue

White, Colorless, White, pink, Yellow, Brown

1.3 Streak

White

1.4 For which Rashi?

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

Cancer

1.5 Planet

Mercury

Sun

1.6 Element of Planets

Earth, Air, Water

Earth, Sun

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Projective, Receptive

Receptive

1.9 Deities

Cupid

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Astral Projection, Psychicism

Spirituality, Healing

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

BrittleWalter Schumann

Brittle

2.2 Solubility

hot salt water

Soluble

2.3 Durability

Not Available

2.4 Specific Gravity

1.98-2.252.67-2.73

1 7.18

2.5 Fracture

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

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

2.6 Cleavage

None

Perfect on [10 1 1] three directions with angle of 74° 55

2.7 Mohs Hardness

5-6.53

2 10

2.8 Chemical Composition

SiO₂ · nH₂O

CaCO 3Ulrich Henn and Claudio C.

3 Optical Properties

3.1 Luster

Vitreous, Pearly

3.2 Pleochroism

None

NilArthur Thomas

3.3 Dispersion

NoneNA

0.007 1

3.4 Transparency

Transparent, Translucent, Transparent to translucent

Transparent, Translucent

3.5 Refractive Index

1.37-1.521.486-1.658

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Trigonal

3.8 Birefringence

Not Available0.154-0.174

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 Calcite Fracture

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

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Opal Vs Calcite Luster

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