Astro Gyan Granth Logo
Total Searches : 99071
Astro Gyan Granth
Related Articles (168)
Article Id - AGG0000506
<%=gyanTitle %>
Astro Gyan Granth Buy Now

Nature of Material: opal (op-hel) is a mineral species;amorphous structure; chemical composition SiO2nH2O (water content usually 3 to 10% by weight, but sometimes as high as 20%).

Appearance:Transparent to opaque virtually any body color.

Phenomena: play-of-color, asterism (rare), chatoyancy (rare).

Variety and Trade Names
Variety and Trade Names

(Most common names)

White opal - translucent to semi translucent with play-of-color against a white body color.

Pink opal -translucent to semi translucent without play-of-color with a pink body color.

Identifying Characteristics

Typical Size Range: large pieces are available

Typical Cutting Styles: cabochons, carvings, faceted, beads


Optic Character: SR, ADR common due to strain

Refractive Index: 1.450 (+ .020, -.080). Mexican opal may read as lowas 1.37, but it is generally 1.42 to 1.43.

Specific Gravity: 2.15 (+ .08, -.90)

Polish Luster: vitreous to resinous

Fracture: conchoidal to uneven

Luster: sub vitreous to waxy  

Cleavage: none

Identifying Characteristics: play-of-color

Hardness: 5 to 6 ½

Toughness: very poor to fair


Availability: plentiful in general, but fine black opal and crystal opal are scarce

Public Recognition: well-known 

Birthstone Designation

October, 6:00 pm, 14 th wedding anniversary

Major Source: Australia, Brazil, Mexico. 

Others: Czechoslovakia,Honduras,

Indonesia,Poland Tanzania US  

Recommended Disclosures: Caution customers and bench jewelers that opal is fragile; avoid sharp blows and changes in temperature. Advise customers when treated or treatment is a possibility. 

The Meaning Of Opal


OPAL  The Stone of " Imagination and Creativity "


General Gemstone Details
Opalis a hardened silica gel, usually containing between 5-10% water. Therefore itis no crystalline, unlike most other gemstones.  There are two varieties:precious opal, which shows flashes of color or iridescence, depending on theangle of viewing and light; then there is common opal whish is often opaque anddisplays no iridescence.  The iridescence of precious opal is caused bythe way the structure, or regular arrangement of tiny silica spheres, diffractslight.  

Precious opals occur in a great rangeof color and varieties. White opal, black opal, fire opal, matrix opal, blueopal, Peruvian blue opal, pink opal...this list is extensive.

Scientific Properties: Moh’s Hardness of 7 with a trigonal crystal structure.

Opal is a mineral species which is amorphous in structure, (without form).  It has a chemical compositionof  SiO2.nH2O. (water content usually 3 to 14% by weight, but sometimes ashigh as 20%).  It is transparent to opaque in appearance and is usuallyseen cut into cabochons, carvings, and beads and is occasionally faceted. Refractive index is around 1.450 but can go as low as 1.42 depending on thetype of Opal.  The specific gravity is 2.15 and the hardness is soft,being a 5.  Opal is very sensitive to heat or sudden change in temperature. Never clean your Opal jewelry in an ultrasonic cleaner, it will crack the Opal.

In other words...opal iscreated of tiny spheres of amorphous silica gel, which gives it its"Fire" and glittery play of colors. A non-crystalline stone, it ispossible for the opal to dry out and crack.  It is a delicate stone, andcan have as much as thirty percent of it's body weight in encapsulatedwater.  This too explains why too much heat can cause an opal to quicklylose it's luster, and why a crack or craze to the surface may occur by movingfrom a hot room to the cold outdoors.


Mystical Properties:Opal is a stone of inspiration which enhances the imagination and creativity as well. It helps one release inhibitions and enhances thememory. 

Opal is also said to be a very spiritual stone, and can help one be "invisible" in situations where they don't care to be noticed. It has been known to bring happy dreams,and also to ease the process of change. 

Opal is a  silicate, containing water, correlating with our emotions.Clarifies by amplifying and mirroring feelings, buried emotions, desires(including love and passion). With this comes less inhibition, more spontaneity, free visualization, clearer imagination, and more vivid dreams.

Pink:Promotes a feeling of centeredness, as a spiritual level this opal actives clairvoyance and clairsentience. It can be particularly helpful in healing headaches caused by blocked or unopened third eye chakras

Healing Properties: Opal are known to strengthen the will to live.  Linked to the heart, and told to stimulate the glands and regulate the metabolism. Opal has a beneficial effect on the human psyche, pouring a warm healing energy on broken hears and restoring harmony.

White:Greatly increases general productivity through activation of the necessaryglands. Regularizes the biorhythms of the wearing, avoiding discordant energieswhich may lead to uncontrolled behavior between frantic activity or totalinactivity.  Harmonizing desire, creating lovemaking rather than pure appetite,restores pleasure to eating which alleviates food related disorders.

Pink:It can be particularly helpful in healing head aches caused by blocked orunopened third eye chakras. Ti promotes tissue regenerating and heals blooddisorders, muscle tension as well as spinal disorders and menopausal symptomswhich may afflict.

Magical Properties
Energy:Projective, Receptive
Element: All Elements
Deity: Cupid
Powers: Astral projection, psychism, beauty, money. Luck and power

To many the opal has been known as astone of sorrow, misfortune and bad luck.  This however is a modern idea,and untrue.  The opal contains all of the colors as well as all of thequalities of all other stones.  And as such, an opal may be"programmed" or charged with virtually every type of energy used inall spells involving all magical needs.

Opals are worn during trips ofastral projection to facilitate the process but also for protection. Opals are used to recall past incarnations, and is favored by many to developpsychic powers.  Jewelry is the best for this aspect, especially ideal areearrings.  Opals are worn to bring inner beauty to the surface, and oneshould carry or use and opal to dedicated oneself to improving outwardappearance.

All opals areconsidered luck-bringing stones.

A warning...opals are extremely sensitive to the energies and vibrations of the wearer, projecting the exact same vibrations as the bearer of the stone. Which on one hand makes an opal a wonderful manifestation stone?  If one truly believes in an idea strong enough, the stone will beam those positive vibrations out, thus attracting just what you hold possible in your mind.  However, on the other hand, your negative vibrations will also be broadcast with the same amount of power. Do not use opal if you are feeling down, pessimistic or negative in any way,you will only compound the issue.


Associations: All Planets Modern Birthstone for the month of October.Stone of Cancer, Libra, Pisces and Scorpio, and said to be ruled by Mercury. 

Chakra Classification:Due to all of the colors contained in this stone, it may be used to work on any and all of the chakras.

White: resonates the 5th, Throat Chakra and can enhance communication, especially that of which has been suppressed through lack of self confidence. Rainbow blue opal cleanses and gently energizes the aura and all the chakras.

Pink: Aids in cleansing and activating the 1st, Root or Base Chakra and 2nd, Sacral or Navel Chakra. Promotes a feeling of being centered. It can be particularly helpful in healing head aches caused by blocked or unopened  6th,Third Eye or Brow Chakra.




Enquire Now