In this article
GemStore team — written by the people who list and pack every stone.
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Dur-e-najaf is colourless natural quartz, known in gemmology as rock crystal, and it carries a deep religious and cultural significance in the Shia tradition through its association with Najaf. Because its value is about being genuine natural crystal rather than about rarity, buyers are rightly worried about glass and cubic zirconia passed off in its place. The good news is that the differences are visible once you know what to look for.
What genuine dur-e-najaf looks like
Natural rock crystal is water clear, but rarely flawless. Under a loupe you will often see fine wispy "veils", tiny crystal inclusions or faint feathery lines. Its sparkle is bright but calm. It feels cool against the skin and stays cool for a moment after you pick it up.
Telling it from glass
- Bubbles: glass often contains perfectly round gas bubbles. Quartz never does.
- Temperature: glass warms up in your palm noticeably faster than quartz.
- Edges: moulded glass has softly rounded facet edges; cut quartz has crisp ones.
- Wear: old glass stones show scuffs and chips quickly; quartz, at 7 on the Mohs scale, keeps its polish.
Telling it from cubic zirconia
Cubic zirconia is much heavier for its size and throws strong rainbow flashes of colour, the "fire" that diamond imitations are known for. Dur-e-najaf has very little fire; its sparkle is mostly white. If your stone flashes red, green and blue like a cheap ring, it is not rock crystal.
The doubling clue
Quartz is doubly refractive. In a larger stone, looking through the table at a facet edge on the far side with a loupe may show those edges very slightly doubled. Glass and cubic zirconia never show this. It is subtle in small stones, so do not rely on it alone.
Keeping rock crystal clear
At 7 on the Mohs scale dur-e-najaf suits a daily ring, though a sharp knock can chip it, so a bezel is worth considering. Warm soapy water and a soft brush keep it bright, since its clarity shows every film of soap or lotion.
A stone of devotion
Dur-e-najaf is worn in the Islamic world, and especially by many Shia families, for clarity and protection. These are traditional and devotional beliefs, not guaranteed outcomes.
What we do
We inspect every stone and photograph it on its own. You can request a certificate of authenticity, have independent lab testing arranged, and open the parcel to check the stone before paying cash on delivery. Browse our dur-e-najaf collection, or see jade and peridot. Urdu and English names are on our names page, with delivery to Lahore, Karachi and all of Pakistan. For astrological pairings see our rashi guide.
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