Short answer: moissanite and diamond are two different minerals, not a fake and a real one. Moissanite (silicon carbide) gives you roughly the same size and sparkle for a small fraction of the price, which is why most buyers in Pakistan comparing the two end up choosing it for everyday and occasion jewellery. Natural diamond is still the better choice if resale value, heirloom status or a family's expectations around a "real" diamond matter more to you than the stone itself.
That is the honest version. Below is the longer one — what each stone actually is, where moissanite genuinely wins, where it genuinely loses, and how lab-grown diamond fits between them.
What is moissanite, exactly?
Moissanite is silicon carbide (SiC). It is its own mineral with its own crystal structure, first identified in a meteorite crater in 1893 by the French chemist Henri Moissan. Natural moissanite is vanishingly rare, so essentially all jewellery moissanite is grown in a laboratory.
This matters for one reason: moissanite is not cubic zirconia, not "American diamond", and not a coated glass stone. It is a hard, durable, optically brilliant gemstone judged on its own terms, and it behaves like one over decades rather than clouding after a year.
The stones we set are D colour, VVS1 clarity, with a GRA certificate for each. That grading language is borrowed from diamond because it is the language people know, and because it describes real, measurable properties. You can see the full range in our moissanite collection.
What is a natural diamond?
Diamond is pure crystallised carbon, formed deep in the earth over an extremely long time and brought near the surface by volcanic activity. Its appeal has always been a mix of the physical — it is the hardest known natural material — and the cultural. In Pakistan, the cultural half does a lot of work: a diamond ring carries meaning at engagements, weddings and milestone gifts that a newer stone does not yet carry in the same way.
Pretending otherwise would be dishonest. If that meaning is what you are buying, you are not buying a set of optical properties, and no comparison table will change the answer.
Moissanite vs diamond vs lab-grown diamond: the numbers
| Property | Moissanite | Natural diamond | Lab-grown diamond |
|---|---|---|---|
| Material | Silicon carbide (SiC) | Carbon (C) | Carbon (C) — identical to natural |
| Hardness (Mohs) | 9.25 | 10 | 10 |
| Refractive index | ~2.65 (higher) | ~2.42 | ~2.42 |
| Dispersion (fire) | 0.104 — roughly 2.4× diamond | 0.044 | 0.044 |
| Relative price (same size) | Lowest by a wide margin | Highest | Middle — well below natural |
| Resale value | Effectively none | Some, but far below purchase price | Very little, and falling as supply grows |
| Certification | GRA and similar moissanite reports | GIA, IGI and other diamond labs | IGI, GIA — laser-inscribed as lab-grown |
| Identified by a jeweller? | Instantly, with a moissanite tester | — | Requires specialist lab equipment |
What the hardness numbers really mean
Mohs 9.25 versus 10 sounds close, and in daily wear it mostly is. The Mohs scale is ordinal rather than linear — diamond is meaningfully harder than the gap suggests — but 9.25 still puts moissanite above sapphire and well above almost everything it will rub against in ordinary life. Neither stone is going to be scratched by dust, keys or a kitchen counter.
Hardness is not toughness, though. Both stones can chip on a sharp knock to an exposed edge, particularly on pointed cuts like marquise or pear. Setting style protects a stone far more than the last 0.75 of a Mohs rating.
Why moissanite throws more rainbow flash — and why some people dislike it
This is the single most useful thing to understand before you buy. Moissanite has a higher refractive index (~2.65 against diamond's ~2.42), so more light is bent and returned to your eye. More importantly, its dispersion is 0.104 against diamond's 0.044 — it splits white light into spectral colours more than twice as strongly.
In practice, moissanite throws noticeably more coloured fire: flashes of orange, blue and green, especially in sunlight or under spotlights, and especially in larger sizes. Plenty of people love this and consider it the whole point. Others find it reads as "too much" and prefer diamond's quieter balance of white brilliance to coloured fire.
Neither reaction is wrong, but you should know which camp you are in before spending rather than after. A rough rule: under about one carat equivalent the difference is subtle; above two carats it becomes obvious to anyone paying attention. If you are unsure, start smaller — many of our rings for her are made in a range of stone sizes for exactly this reason.
Can anyone tell the difference?
Two separate questions, two different answers.
Can a jeweller tell? Yes, immediately. A moissanite tester measures thermal and electrical conductivity and identifies the stone in seconds. Any jeweller in Karachi, Lahore or Islamabad with a basic tester will know. Nobody should buy moissanite believing it will pass professional inspection — it will not, and it is not meant to.
Can a person across the table tell? Generally no. The naked eye, at conversational distance, cannot reliably separate a well-cut moissanite from a well-cut diamond. The give-away, when there is one, is the extra fire in bright light.
Where this becomes a real decision is family expectation. If a ring is going to be examined by relatives who care specifically that it is diamond, and you would find that conversation uncomfortable, that is a genuine reason to choose diamond. It is not a silly reason. It is one to weigh openly rather than discover later.
Where diamond is clearly the better choice
We sell moissanite, so this section deserves extra care.
- Resale and liquidity. Moissanite has essentially no resale market. If you may need to convert the piece back to cash, diamond is the only one of the three with an established secondary market in Pakistan. Be realistic even so: diamond resale typically returns a fraction of what you paid, because retail price includes cutting, certification, margin and making charges that no buyer will repay you. We set out our own position plainly on the resale value page.
- Heirloom intent. If the piece is meant to pass to a daughter or granddaughter as the family ring, natural diamond carries a continuity of meaning that a stone in wide circulation only since the 1990s cannot yet claim. That is a cultural fact rather than a gemmological one, but it is real.
- A recipient who specifically wants diamond. If someone has said they want a diamond, buy a diamond. A better stone on paper is not a better gift.
- Investment framing. If you are thinking of the purchase as storing value, neither moissanite nor lab-grown diamond belongs in that conversation. Jewellery of any kind is a poor investment vehicle — but among the three, only natural diamond has any claim at all.
Where moissanite is clearly the better choice
- Size for budget. This is the big one. For the price of a small natural diamond you can have a substantially larger, cleaner, whiter moissanite. If visual presence matters most to you, there is no contest.
- Everyday wear and travel. At 9.25 Mohs it is durable enough for daily use, and losing it would not be financially catastrophic.
- Gifting where the occasion, not the stone, is the point. Anniversaries, Eid pieces and engagement-adjacent gifts — see our wedding gifts for her.
- Buying more than one piece. A moissanite budget stretches to a set rather than a single stone.
- Personalisation. When the stone is not the whole story, engraving often matters more to the recipient than carat weight. Our engravable pieces are built around that idea.
Where does lab-grown diamond fit?
Lab-grown diamond is chemically, physically and optically diamond — same carbon, same Mohs 10, same 2.42 refractive index, same 0.044 dispersion. It is not a simulant. It is grown by HPHT or CVD rather than pulled from the ground, and reputable stones are laser-inscribed and certified by IGI or GIA as laboratory-grown.
It sits between the other two on price, and it is the right answer for a specific buyer: someone who wants a diamond's exact optical character — that quieter fire — without natural diamond pricing, and who does not need the stone to be earth-mined.
The honest caveat is resale. Lab-grown prices have fallen steadily as production has scaled, so a stone bought today may be replaceable for less in a few years. If you are buying for permanence of value, lab-grown does not solve that problem any better than moissanite does.
What about the setting?
The stone is only half the piece. We set in hallmarked 925 sterling silver, handcrafted in Karachi, made to order in 7–21 days. Silver is softer than gold and will oxidise over time, which is why every piece includes lifetime free replating — and why our silver care guide is worth two minutes before the piece arrives.
If you are combining moissanite with coloured stones, or considering a natural gemstone centre instead, the natural gemstones guide covers what to expect from each. And because made-to-order pieces are sized at production, check the ring size guide before ordering.
So which should you buy?
Choose natural diamond if resale matters, if the piece is an heirloom, or if the person receiving it wants a diamond specifically.
Choose lab-grown diamond if you want diamond's exact look and grading language at a lower price and accept that it will not hold value.
Choose moissanite if you want the most visual presence per rupee, you are comfortable telling people what it is, and you like — or at least do not mind — the extra fire.
Frequently asked questions
Is moissanite a fake diamond?
No. Moissanite is silicon carbide, a distinct mineral with its own properties, sold under its own name. A fake would be something pretending to be diamond; moissanite is not sold or graded that way. Calling it fake is like calling sapphire a fake ruby.
Will moissanite lose its sparkle over time?
No. Its brilliance comes from its crystal structure and its cut, not from a coating, so it cannot wear off. What you will notice is a film of skin oil, soap and lotion dulling the stone — the same thing that happens to diamond. Warm water, mild soap and a soft brush restores it.
Does moissanite have resale value in Pakistan?
Realistically, no. There is no established secondary market for moissanite here, so buy it expecting to keep or gift it rather than sell it. The silver it is set in retains some scrap value. We do offer a buy-back on our own pieces — see the resale value page for the terms.
How can a jeweller tell moissanite from diamond?
A handheld moissanite tester distinguishes the two in seconds by measuring electrical and thermal conductivity. Under magnification a trained eye may also spot doubling of the facet edges, because moissanite is doubly refractive while diamond is not. Neither test is available to the naked eye.
Is moissanite acceptable for an engagement ring?
Increasingly yes, and it is one of the most common reasons people buy it. The deciding factor is not the stone but the conversation: if both people know what it is and are happy with the choice, it works. If one person is expecting diamond, choose diamond.
What does a moissanite piece cost, and how long does it take?
Prices are listed in PKR on each product page and vary with stone size and design. Every piece is made to order in Karachi and ships in 7–21 days with free nationwide delivery — details on the delivery page. There is a 30-day exchange window and a 7-day return window, set out on the returns and refunds page.