Natural, provably
Natural rough only, bought through Kimberley Process channels and logged parcel by parcel. We do not mix lab-grown goods anywhere on the floor.
The house
A cutting floor, not a trading desk.
Nandanvan Gems is a manufacturer. We buy natural rough, plan it, cut it, polish it and sort it in one building in Katargam — and then we answer for it.
What we do
The sizes everyone else subcontracts.
Most of the diamond trade is organised around stones you can hold between two fingers. Ours is organised around the ones you cannot — melee, star sizes, and −2 and below, where a single crystal yields dozens of finished stones and a degree of rotation on the planning table decides whether it yields thirty or thirty-six.
Those goods are usually farmed out to whoever has capacity that week, which is exactly why parcels arrive inconsistent. We kept them in house. Every cutter on our floor does one step of the fifty-seven and does it all day, and the sorting bench that seals your packet sits about twenty metres from the wheel that cut it.
The result is unglamorous and it is the entire product: the parcel opens exactly as described.
What we hold ourselves to
Four commitments, and nothing fashionable.
These are not values on a wall. Each one is something a customer can check on arrival, which is the only kind worth publishing.
One sortment
A packet marked G–H VS is G–H VS from the first stone to the last. If we cannot hold the range, we say so before you order rather than after.
Answered in a day
Stock inquiries get a real answer inside one working day — including the answer "we do not have that", which saves you more time than a maybe.
Repeatable
We keep the make and sortment of what we ship you, so next season's order can be matched to last season's instead of started from scratch.
The floor
Surat cuts nine in ten of the world's diamonds. This is what that looks like up close.
Our building sits in Katargam, the district where the trade concentrated decades ago. Proximity is not sentiment — it is why a recut can be turned around in days rather than weeks.
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Of the world's diamonds are polished in Surat, our home city
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Years on the cutting floor
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Typical response on a stock inquiry
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Countries we currently ship to
Who we work with
Benches that cannot afford a bad parcel.
Our customers are jewellery manufacturers, private-label houses and designers who set small stones in volume — pavé, halos, eternity bands, calibrated layouts. For them a parcel that runs half a shade off is not a grading debate, it is a production stoppage.
We ship to twelve countries and quote in the language you are comfortable in: Gujarati, Hindi or English. Orders start at parcel level; there is no minimum designed to filter out smaller houses.
- Jewellery manufacturers
- Private label
- Designers & ateliers
- Repair & restoration
Send a sieve range. We will tell you what is on the floor.
No account needed, no minimum designed to filter you out. Just tell us what you set and we will quote it.