Lapis lazuli

Opal

Lapis lazuli Vs Opal

Lapis lazuli

Opal

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Astrology

Origin

Afghanistan

Ethiopia

Color

Violet, Blue, White

Yellow, White, Red, Brown, Blue

Streak

Blue

White

For which Rashi?

Sagittarius

Cancer, Libra, Scorpio

Planet

Venus

Mercury

Element of Planets

Water

Earth, Air, Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Venus

Cupid

Not to wear with

Powers

Protection, Courage

Astral Projection, Psychicism

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

BrittleWalter Schumann

Solubility

hot salt water

Durability

Specific Gravity

2.50-3.001.98-2.25

1 7.18

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Fracture

Uneven-Conchoidal, ConchoidalWalter Schumann

Conchoidal

Cleavage

3,6

None

Mohs Hardness

5.55-6.5

2 10

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Chemical Composition

The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄

SiO₂ · nH₂O

Optical Properties

Luster

Vitreous, Greasy

Vitreous, Pearly

Pleochroism

None

Dispersion

-0.01

0.005 1

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Transparency

Opaque

Transparent, Translucent, Transparent to translucent

Refractive Index

1.500-1.6701.37-1.52

1 3.25

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Optic Character

Crystal System

Trigonal

Birefringence

-9999-9999

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Supports heart health

Respiratory

Good

Reproductive

Digestive

Psychology

Wisdom

Creativity

Healing

Emotional healing

Qualities Associated

Inner Truth

Creativity

Lapis lazuli Vs Opal Fracture

Fracture is an important parameter when you compare Lapis lazuli and Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli 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 Lapis lazuli is Uneven-Conchoidal and ConchoidalWalter Schumann. Opal fracture is Conchoidal.

Compare Gems for Sagittarius

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Lapis lazuli Vs Sodalite

Lapis lazuli Vs Opal Luster

A primary knowledge about Lapis lazuli 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. Lapis lazuli exhibits Vitreous and Greasy luster. Opal, on other hand, exhibits Vitreous and Pearly luster.