US buyers receive tariff-inclusive quotes, so there are no customs surprises within the confirmed quotation scope.

Lab-Grown Diamond Manufacturers, Surat
Diamonds made to a standard exacting North American buyers can rely on.
Elmonas manufactures certified, calibrated lab-grown diamonds for jewellery teams that need control in every dimension.
You’re buying from the bench - there’s no factory behind us to go around.
Surat manufacturing, direct to your bench
NORTH AMERICA / CLEAR DELIVERY
Serving US & Canada.
A direct manufacturing relationship should arrive with a clear commercial path, not a customs question at the last minute.
Loose polished synthetic diamonds classified under HS 7104 carry 0% MFN duty in Canada; destination taxes and final classification remain shipment-specific.
Shipments are cleared through DHL or FedEx Express, fully insured, and normally arrive in 2–4 business days.
Classification, destination taxes, and delivery timing are confirmed for each shipment. No fluctuating tariff percentage is published here.
02 - MADE IN SURAT
Made in Surat, by our benches.
Elmonas is built inside Surat’s cutting-and-polishing cluster: close to the work, the tools and the people who understand the make.
IGI or GIA certified; grades, fluorescence and cut stated per stone.
We make to a specification, and we can rework what we have made.
Key facts
- Surat, India - CVD and HPHT lab-grown diamonds, certified and calibrated for trade buyers in North America.
- IGI or GIA certified; grades, fluorescence and cut stated per stone.
- Specification make lead time: 5–10 working days.
- 24-hour response to trade enquiries; same-day on WhatsApp during Surat hours (IST 09:00–19:00).
- Ships to US and Canada; tariff-inclusive US pricing confirmation provided in each quotation.
Stone specifications and report details, available to order.
By the numbers
03 - OUR PRODUCTION
What we make.
Certified lab-grown diamonds, cut, calibrated and finished for reliable work at the bench.

Certified stones
Production with certification handled as part of the make, not as an afterthought.
Calibrated profiles
Repeatable dimensions and ratios for programmes where the setting already sets the terms.
Matched parcels
Layouts matched for tonal consistency, proportion, and the way a finished piece must read.
CURRENT PRODUCTION AVAILABILITY
Available to order, subject to confirmation.
Explore available-to-order stones with report details; confirm availability on WhatsApp.
Checking current availability…
04 - MADE TO SPECIFICATION
SPEC 05–10 DAYS
Made to your specification.
Send the specification your jewellery programme needs, and we make the diamond to meet it.
Custom cut & calibration
Shape, exact dimensions, ratios and finish are worked to the buyer’s specification sheet.
Layouts made for manufacture
Matched layouts and calibrated parcels for manufacturing jewellers and repeatable settings.
Rework within the house
Recut, repolish and rework of stones we have made, with continuity of production knowledge.
Typical lead time for a spec make: 5–10 working days

LASER INSCRIPTION / IDENTIFICATION / FINAL CHECK
05 - HOW WE WORK
A clear make. Practical terms.
We begin with the specification and stay accountable to the stone after the finished make leaves our benches.
Built for working jewellers.
We work with established jewellers and ateliers on flexible, negotiated trade terms. First orders confirm the make; ongoing accounts move to agreed terms after credit and reference checks. We work beyond a prepaid model.
Repair or replace.
Every stone is verified against its certificate before dispatch. In the rare case a piece needs correction - a spec mismatch, a chip, a make issue - it goes back to our benches. We repair or replace and return it.
06 - FAQ
The useful questions.
What are your payment terms?+
We work with established jewellers and ateliers on flexible, negotiated trade terms. A first order confirms the make; ongoing accounts move to agreed terms after credit and reference checks.
What if a stone needs correction?+
Every stone is verified against its certificate before dispatch. If a piece needs correction, it goes back to our benches. We repair or replace and return it.
What can I specify in a custom make?+
Shape, exact dimensions, ratios, finish, parcel requirements and timing can all be placed in the production brief.
Can you match stones for a manufacturing layout?+
Yes. Matched layouts and calibrated parcels are prepared around the proportions and visual consistency your finished piece requires.
Can a stone be reworked after it is made?+
We can assess recut, repolish and rework requirements for stones made by Elmonas, with the original production information close at hand.
Every stone we ship is one we made.
07 - PRODUCTION BRIEF
Commission a make.
Tell us the programme, profile, or specification you need. We will return with the practical production detail.