Calcite

Opal

Calcite Vs Opal

Calcite

Opal

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Astrology

Origin

Mexico

Ethiopia

Color

White, Colorless, pink, Yellow, Brown

Yellow, White, Red, Brown, Blue

Streak

White

For which Rashi?

Cancer

Cancer, Libra, Scorpio

Planet

Mercury

Element of Planets

Earth

Earth, Air, Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Cupid

Not to wear with

Powers

Spirituality, Healing

Astral Projection, Psychicism

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Brittle

BrittleWalter Schumann

Solubility

Soluble

hot salt water

Durability

Specific Gravity

2.67-2.731.98-2.25

1 7.18

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Fracture

Conchoidal

Cleavage

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

None

Mohs Hardness

35-6.5

2 10

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Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

SiO₂ · nH₂O

Optical Properties

Luster

Vitreous, Pearly

Pleochroism

None

Dispersion

0.150.01

0.005 1

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Transparency

Transparent, Translucent

Transparent, Translucent, Transparent to translucent

Refractive Index

1.486-1.6581.37-1.52

1 3.25

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Optic Character

Crystal System

Trigonal

Birefringence

0.154-0.174-9999

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Emotional Intelligence

Creativity

Healing

Emotional healing

Qualities Associated

Amplification

Creativity

Calcite Vs Opal Fracture

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

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Calcite Vs Opal Luster

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