s What is Fire Opal | Opal Stone Benefits And Identification

Natural Opal

What is Opal Stone

Opal stone is one of the best substitutes for diamond stone. It is associated with the planet Venus. It comes in almost all colors, but it is mainly worn in white for astrological benefits. Opals contain water, and any sudden changes in temperature may cause them to crack or fracture.

opal-stonePhysical properties and chemical composition

The chemical composition of opal stone is SiO2 nH2O+aI, Fe, Ca, Mg, and Na in traces. Some contain small amounts of radioactive elements. Water percentage is a variable. Its hardness is 5.5–6.5 on the Mohs scale. The specific gravity (S.G.) ranges between 1.98 and 2.20, and the refractive index (R.I.) lies between 1.40 to 1.47.

Origin Place or Source Country

The majority of opal stone (almost 95%) comes from Australia. Mexico, Brazil, Ethiopia, and the USA are some of the other places from where it comes. This gem comprises tiny spheres of silica. It is formed when silica-rich water seeps into the Earth’s crust. From there, it is separated into two categories: common and noble opal.

Synthetic, duplicates, or copy

Synthetic opal, gilson created opal, slocum glass, opalite ( plastic imitation with play of colour), composite (doubletst, triplets), mother of pearl  (some costly), and chalcedony.

Buying/price guide – How to value?

Play Of Colour Phenomena or Firing

The price of an opal stone depends mostly on this quality. Because of the play of colour, sparkles of different colours are seen in the opals. The play of colour is caused by the direction of light from the spheres of silica gel in the opal structure. Specific colours are seen depending on the size of the silice gel and its arrangement in the structure.


It is generally cut into basic cabochons cut to allow most of the light to pass through them. The basic technique of cutting involves keeping this gem as large as possible with minimizing waste. It is usually cut in cabochon to display its rainbow effect.


When talking about opal stone, clarity means judging the amount of transparency and minimum inclusions. It comes from transparent to opaque. The background plays a significant role in deciding the value. If its background is milky, it will be less valuable.


Opal stones come in a huge variety. Black ones are the rarest and most valued. Fire opal stone is also quite valuable and expensive. It displays a dominant red, orange or yellow sparkle. Its range goes from around Rs. 400 per carat to Rs. 20,000 per carat.

Benefits / effects

According to Indian astrology, it is associated with the planet Venus. It represents human desires. This rashi ratna is most recommended for people with the zodiac signs of Taurus (Vrashab rashi) and Libra (Tula rashi). Wearing it significantly reduces the malefic effects of Venus on a person.

1. Healing Benefits

It has a lot of healing powers. It has the power to treat Parkinson’s disease, viral fevers, and infections. It strengthens the memory power of the wearer and purifies the blood and kidneys. It is also very beneficial for treating depression, mental disorders, and lethargy.

2. Satisfying Desires

By wearing it, one can fulfil all the desires of the heart very quickly. It has the power to bring comfort and luxury to the life of the wearer. It blesses the person with love, happiness, joy, passion, and attraction.

3. Improves Relationships

It has the power to increase mutual understanding and love between couples. It clears all confusion and misconceptions between couples and helps solve the issues that come with married life. It brings marital bliss. and helps in finding a suitable partner.

4. Protects the wearer

It protects the wearer from all the negative things, like fears, ghosts, and nightmares. It provides a positive environment around the wearer and makes the wearer stronger. It helps fight the obstacles of life and protects against natural calamities such as fire, storms, and accidents.

How to wear ?

Weight – Minimum 1/10th of bodyweight

Colour – As recommended by the astrologer

Metal – Silver or Gold

Finger – Index Finger of working hand

Day & Time – Friday afternoon (12’O clock)

Chanting MantraOm Shun Shukraye Namah (108 times)

Identification Method / how to check?

1. Origin Test

A major chunk of this comes from Australia (almost 95%). Therefore, check the country of origin or confirm it from the certification or dealer of stone or shop owner from whom you are buying. This is because Russian and Hong Kong-produced fake but give the appearance of real ones.

2. Irregularities Test

Since it is a natural stone, it will retain some asymmetry in its shape even after cutting. This implies that if your opal stone is perfectly circular or oval, then you should consider inspecting it properly before buying it or buy it from a certified and authentic dealer.

3. White light Test

Place the stone on a table and pass the white light over it. If it shows different layers of color, it is a sign of real and good quality. Be cautious when looking at color layers; if it appears just below the surface, it could be a fake.
Note: Do not use fluorescent lighting as it may appear more fired than it is.

4. Look for pricing

Real opal stones are a little bit more costly. If you are getting this at an extremely lower price than usual, you need to doubt the fakeness of stone. However, you should also consider checking the quality.

5. Observe patterns closely

Take your stone to the laboratory and carefully observe the large patches of colors. If you find snaky patterns of colors very symmetrical and too perfect, Then it might be fake or synthetic as the real ones will not show that much perfection in the rainbow effect.

6. Magnification

Crystalline inclusions (needles), Flow structures, Cloud like inclusions, Dendritic inclusions