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Written by Sameer
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Quick answer: ruby and sapphire are one mineral, corundum, with a hardness of 9. Red corundum is ruby; every other colour, whether blue, yellow, pink or white, is sapphire. In astrology ruby belongs to the Sun (Leo), blue sapphire to Saturn and yellow sapphire to Jupiter. Carat for carat, a fine ruby usually costs more.
Ruby vs sapphire, explained by Authentic Gems in Karachi for anyone in Pakistan who wants to understand the stone before paying for it.
Yaqoot and neelam are two of the best-known gemstones anywhere, and people are often surprised to hear they are the same mineral. So what actually separates them? Mostly a trace element or two, and a lot of tradition.
| Ruby (yaqoot) | Blue sapphire (neelam) | |
|---|---|---|
| Mineral | Corundum (red) | Corundum (blue and every other colour) |
| Hardness | 9 | 9 |
| What gives the colour | Chromium | Iron and titanium |
| Planet in astrology | Sun (Surya) | Saturn (Zohal / Shani) |
| Zodiac | Leo; July birthstone | Capricorn, Aquarius; September birthstone |
| Traditionally worn | Ring finger, right hand, in gold | Middle finger, right hand, in silver |
| What drives the price | Depth and purity of red, clarity, size, heating | Tone and saturation of blue, clarity, origin, heating |
One mineral, two colours
Ruby and sapphire are both corundum, and both rate 9 on the Mohs scale. When corundum comes out red, it is called ruby. In any other colour, blue, yellow, pink or green, it is sapphire. You could fairly call a ruby a "red sapphire" that earned its own name.
Where they part ways
- Colour: ruby is red, thanks to chromium. Sapphire is best known in blue, which comes from iron and titanium.
- Astrology: ruby (yaqoot) is the Sun's stone. Blue sapphire (neelam) is Saturn's, and yellow sapphire (pukhraj) is Jupiter's.
- Price: a fine Burmese ruby is among the most expensive gems there are. Sapphire covers a huge spread of prices, depending on colour and origin.
How to choose
Go with the colour and meaning that speak to you. If the stone is for astrological reasons, let your birth chart decide, with the help of a qualified astrologer. Whichever you pick, every stone we sell is natural, listed with its weight and any known treatment, and you are welcome to have it tested independently.
Blue sapphire in brief
- Also called: neelam; corundum (aluminium oxide)
- Colour: from light cornflower blue to deep royal blue
- Hardness: 9 on the Mohs scale
- Main sources: Sri Lanka (Ceylon), Kashmir, Madagascar, Thailand and Africa
- Astrology: ruled by Saturn (Shani); traditionally for Capricorn and Aquarius, and the September birthstone
Buying neelam in Pakistan: a short checklist
- Get the exact carat weight, and the origin if it is known. Ruby or sapphire, it always comes back to knowing exactly what you are getting.
- Understand what moves the price: colour and tone (a medium-deep, velvety blue is most valued), clarity, origin (Ceylon and Kashmir carry a premium), weight and treatment.
- Make sure the stone can be tested. An honest seller is happy for you to take the stone to a lab.
- Pay Cash on Delivery so you see the stone before any money changes hands.
- Know how to look after it: sapphire is extremely tough. Warm soapy water and a soft cloth are enough. Keep harsh chemicals away from any stone that has been oiled or fracture-filled.
What to remember
- No single test settles ruby against sapphire, or real against fake. Look at colour, clarity, weight and treatment together.
- Only buy stones sold with their exact weight, origin and treatment stated, and that can be checked by a lab.
- Pay on delivery, look at the stone in daylight, and use the 7-day return window if anything doesn't match the listing.
Questions we get asked
Can I tell ruby from sapphire, or real from fake, at home?
To a point. The visual and hardness checks in our guides catch most fakes, but only a gem lab can confirm a natural, untreated stone. Buy from someone who is glad for you to test it.
Where can I buy original gemstones in Pakistan?
We are Authentic Gems, based in Karachi. Every stone is natural and can be tested, delivery is Cash on Delivery across the country, and unused stones can be returned within 7 days. A good place to start is our blue sapphire (neelam) collection.
Do I need an astrologer before wearing one?
If you are wearing it for astrological reasons, yes. Our gemstones by zodiac sign guide gives the traditional pairings as a starting point.
How long will delivery take?
We confirm your order by phone or WhatsApp and dispatch within 1 working day. In Karachi, parcels usually arrive in 1–2 working days. Lahore, Islamabad, Rawalpindi, Faisalabad, Multan, Peshawar and the other major cities usually take 2–4, and smaller towns up to about 7. You open the parcel in front of the rider, check the stone, and then pay.
How we can help
Not sure what you are looking at? Send us a daylight photo of the stone, or of a listing you found somewhere else, on WhatsApp. We will tell you honestly what it looks like to us and what you should be asking the seller. If you decide to buy from us, every piece comes with its exact carat weight, can be tested, and can be checked before you pay. If you don't, you still get a straight answer.
Further reading
- How to Identify an Original Ruby (Yaqoot): Five Simple Checks
- Yellow Sapphire (Pukhraj): Benefits and Who Should Wear It
- Real or Fake Feroza (Turquoise): How to Tell
- How to Buy a Genuine Gemstone in Pakistan
Keep exploring: see every blue sapphire (neelam) we have in stock, read neelam benefits and who should wear it, or find your stone by zodiac sign.
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