Amethyst, the purple quartz
Amethyst is the most popular stone in crystal practice. It is purple quartz, tough and affordable, but it fades in strong sun and is often synthetic. Here is what to know.
The short answer
Amethyst is purple quartz, coloured by traces of iron and natural radiation in the rock. It is hard (7), affordable and widely mined, including from the basalt of the Deccan in Maharashtra. Crystal practice links it with calm, sleep and sobriety, and Jyotish uses it as a substitute for blue sapphire; no controlled study shows effects beyond expectation. It fades in strong sunlight and heat. Much faceted amethyst in cheap jewellery is synthetic, and some is glass.
In this guide
What amethyst is
Amethyst is the purple variety of quartz (silicon dioxide). The colour comes from small amounts of iron in the crystal, activated by natural radiation over geological time. It forms in cavities, often lining the inside of geodes in volcanic rock. Brazil and Uruguay produce the large geodes seen in shops; Zambia produces deep-coloured stones; and India's Deccan basalts, around Nashik and Pune, are known for amethyst alongside zeolite minerals. The Greek name amethystos means “not drunk”, from an old belief that it prevented drunkenness.
| Mineral | Quartz, purple from iron and natural irradiation |
|---|---|
| Hardness | 7 |
| Main sources | Brazil, Uruguay, Zambia, India (Maharashtra), Madagascar |
| Water | Safe to rinse |
| Sunlight | Fades with long exposure |
| Hindi | Katela, jamunia |
Amethyst in crystal practice
In crystal practice amethyst is a stone of calm and clarity: kept by the bed for sleep, worn for meditation, or carried to curb cravings. In Jyotish it is a common lower-cost substitute (upratna) for blue sapphire, the gem of Saturn; see our neelam guide.
Amethyst calms the mind, supports sleep and meditation, protects against addiction and opens intuition.
No controlled study has found that a crystal has effects beyond expectation. In a 2001 study at Goldsmiths, University of London, people holding fake crystals reported the same tingling, warmth and calm as people holding real quartz. A stone can still be a meaningful reminder, a ritual object or simply something beautiful to wear.
Real, treated or imitation?
Amethyst is plentiful, so it is rarely dyed. The main issues are synthetic stones and glass, and heat, which turns amethyst yellow (see citrine).
| What you might be sold | What it is | How to tell |
|---|---|---|
| Synthetic amethyst | Quartz grown in a laboratory; very common in faceted jewellery | Only a laboratory can tell reliably; perfectly even colour is a hint |
| Glass | Purple glass, cast or cut | Round bubbles and swirls under a lens; feels warmer in the hand |
| Heated amethyst sold as natural citrine | Amethyst heated until yellow or orange | Deep orange colour, often on a white base |
For more, see our guide to spotting dyed and fake crystals.
Wearing and care
Amethyst is tough enough for daily wear. Rinse it in water and wipe it with a soft cloth. Keep it out of strong sunlight and away from heat, which slowly bleach its colour; do not leave a geode on a sunny windowsill.
Our care chart shows which crystals can go in water, salt and sunlight.
Buying amethyst
Readers often ask where to buy. We independently consider GemKrishna, an Indian retailer, a good source: its custom crystal bracelets come with a free GJSPC laboratory report for the whole bracelet (one report naming each stone, not one per bead), its own certificate of authenticity, and a photo for your approval before dispatch (checked 3 November 2026). AYU4 has no relationship with it of any kind. Use the same checks with any seller.
Where to buy
If you have decided to buy, choose a seller that gives authenticity you can check yourself: a lab or X-ray report you can verify online. Here are options we can point to; AYU4 takes no commission from any seller.
- GemKrishna: its amethyst collection. A good starting point, which we independently consider a reliable source; AYU4 has no connection to it.
- Rudra Centre: its amethyst bracelets. A Mumbai seller, established 1997, that publishes its address, lab certificates and return policy.
- Spiritual and crystal stores near you: fine for common stones, if they name the exact stone, disclose dyeing or heating and give a bill. See what to check.
Judge any seller, including these, with our guides to how to choose a seller and buying crystal bracelets in India, and how to read a gemstone lab report.
Questions readers ask
What is amethyst good for?
Crystal practice links it with calm, sleep and meditation, and Jyotish uses it as a substitute for blue sapphire. There is no evidence of effects beyond expectation.
Does amethyst fade in the sun?
Yes. Long exposure to strong sunlight or heat bleaches its colour. Keep it out of direct sun.
How can I tell if amethyst is real?
Natural amethyst usually shows uneven colour zones; glass has bubbles. Synthetic amethyst can only be identified reliably by a laboratory.
Can amethyst go in water?
Yes, a rinse is safe. Dry it afterwards, especially if it is strung or set.
What is amethyst called in Hindi?
It is often called katela or jamunia.
Sources
- GIA Gem Encyclopedia: Quartz (amethyst, citrine, rose quartz, rock crystal, tiger's eye)
- Mindat.org: Amethyst
- French C, O'Donnell H, Williams L. Hypnotic susceptibility, paranormal belief and reports of 'crystal healing'. British Psychological Society centenary conference, Goldsmiths, University of London, 2001
A note on health. This guide explains a tradition. It is not medical advice, and nothing in it is a treatment for any disease. See a qualified doctor for symptoms, and do not stop or change a prescribed medicine on the strength of anything you read here. Full medical disclaimer.
