Physical Features
| Chemical | SiO2 |
| Color | White, Black, Banded |
| Crystal Habit | Aggregate |
| Crystal System | Trigonal |
| Cleavage | None |
| Fracture | Conchoidal |
| Hardness | 6.5 to 7 Mohs scale |
| Luster | Vitreous |
| Transparency | Opaque |
| Specific gravity | 2.55 - 2.70 |
| Refractive index | 1.530 - 1.543 |
Onyx is the rare gemstone which was used from the early civilization for its high energy power and sober beauty which gives a long lustrous impact among everybody. The deep black color with white shades were used in magic works,burials and even amulets in swords. The irony lies in the fact though there were numerous precious gems but onyx is mentioned in Bible as the historical gem.
There are diversities of culture and believes, so onyx also have different myths attached to it. Some believes it is a stone of bad luck where positive energy of human beings converges into it. It was said to invoke sadness,anger,family discord and separation of minds between human.
Onyx -Scientific origin
Onyx is layered chalcedony with white and black band around it. It has a wide range of varieties where onyx alternate with reddish brown chalcedony known as sard is called sardonyx.
Uses of Onyx
There are several myths and numerous outcomes of using onyx.
A shield against nightmares and negative thoughts:- It is considered as fighter against any kind of fear and protective shield for psychic feelings. It is tool of protection from nightmares or fear from darkness, a fighter against negativeness and criticism.
Enhances strength and stamina:-onyx is considered as excellent stone for invoking inner strength,stimulating inventive power and enhances self-control.
Physical healing:-Onyx has a vast aspects in healing purposes. It treats a person physically for blood pressure,bone marrow,cell damage,teeth infections and epilepsy.
Helps in hearing sensation:-Wearing onyx heals the haring sensation,sharpens the hearing sensation,activates the nervous system.
Overcomes addiction:-If a person is suffering from any kind of addiction which is causing physical and mental degradation will overcome it by wearing this stone.
The outcome of wearing onyx is numerous,and the best result could be gained if it is used with silver. Therefore to ensure good fortune and happiness then onyx is the best solution to any problem.
Onyx in Astrology
Ruling planetSaturn
Zodiac signsCapricorn and Aquarius
ChakraRoot
Day to wearSaturday
FingerMiddle finger
MetalSilver or panchdhatu
Black onyx is a banded chalcedony often used for Saturn and in protective jewellery.
In Vedic astrology, Onyx is linked with Saturn, the planet of discipline, hard work, career stability, patience and long-term success. The main gem of Saturn is Blue Sapphire (Neelam); Onyx is a gentler, more affordable stone that people choose to support the same planet.
Benefits of Wearing Onyx
- Builds strength and self-control
- Supports discipline
- Protective energy
- Strengthens the positive results of Saturn: discipline, hard work, career stability, patience and long-term success
Crystal and gemstone benefits are traditional beliefs and are not a substitute for medical or professional advice.
How to Wear Onyx
- Weight: there is no strict rule; a stone of 5 to 7 carats in a ring, or any comfortable size in a pendant or bracelet, is common.
- Metal and finger: set it in silver or panchdhatu and wear it on the middle finger of your working hand.
- Day and time: wear it for the first time on a Saturday, in the evening, preferably during the Shukla Paksha (waxing Moon).
- Purify: dip the ring or pendant in raw milk mixed with Ganga jal (or clean water) for a few minutes, then rinse it.
- Energise: light a lamp, face east and chant the Saturn mantra 108 times: Om Praam Preem Praum Sah Shanaischaraya Namah.
Saturn stones can act quickly. Many astrologers suggest a trial: keep the stone under your pillow or wear it for three days and notice how you feel before wearing it regularly.
Who Should Wear Onyx?
- People whose Moon sign or Ascendant is Capricorn and Aquarius, ruled by Saturn.
- Anyone running the Saturn Mahadasha or Antardasha, when Saturn is a helpful planet in the chart.
- People who want more of Saturn's qualities: discipline, hard work, career stability, patience and long-term success.
Use care when combining stones: stones of Mercury, Venus, Saturn, Rahu and Ketu work well together, but are usually not combined with stones of the Sun, Moon or Mars.
Care and Cleaning
Onyx has medium hardness (about 6.5 on the Mohs scale). It is fine for rings worn with care. Clean it with lukewarm water, mild soap and a soft brush, and take it off for heavy work, cleaning and swimming. Many people also re-energise their stone once a month by placing it in moonlight or chanting the planet's mantra.
Tips for Buying Onyx
- Choose a natural, untreated stone; heated, dyed, glass-filled or synthetic stones are not considered astrologically effective.
- Ask for a lab certificate from a recognised gem laboratory.
- Good colour, clarity and a clean cut matter more than size.
- Buy from a trusted seller who explains the origin and any treatment of the stone.
Common Questions
Can I wear Onyx without a horoscope check?
It is better not to. Onyx is a strong stone, so an astrologer should first confirm that Saturn is favourable in your chart.
Which finger should I wear Onyx on?
Traditionally on the middle finger, set in silver or panchdhatu, first worn on a Saturday.
How long does Onyx take to show results?
Many people notice a difference within a few weeks, though astrologers say the full effect builds over a few months of regular wear.