IGI Certified Lab Grown Diamond Wholesale Supplier

Uniglo Diamonds works with jewellers, retailers, jewellery brands and other buyers sourcing diamonds for their businesses. For an IGI-specific enquiry, begin with the intended use and the documentation your customer or purchasing team requires.

An engagement-ring commission may need a particular oval outline, a minimum face-up size and an individual IGI report. An earring order may require two separately graded diamonds that look balanced together. A stock purchase may allow a range of carat weights while keeping the same colour, clarity and reporting requirements.

Tell us whether you are looking for round brilliants, ovals, emerald cuts, cushions, radiants, pears or another shape. Include any measurements dictated by your jewellery design, and distinguish essential requirements from preferences where alternatives would be acceptable.

An IGI-certified lab-grown diamond is accompanied by a grading report from the International Gemological Institute. IGI explains that its loose diamond reports identify natural or laboratory-grown origin and document the diamond’s grading characteristics. What buyers commonly call a certificate is a grading report. IGI’s report guidance

For a wholesale purchase, this report provides a reference for the stone being offered. It helps your purchasing team compare the supplier’s description with independently recorded information and retain that information for the eventual customer.

Certification still needs to be considered alongside the actual specification. An IGI report documents the diamond’s assessed qualities; the presence of a report alone does not mean that every stone will suit your collection, setting or customer brief.

For a detailed explanation of the document itself, read our IGI-certified lab-grown diamond reports guide.

A precise enquiry makes it easier to identify suitable options and compare quotations. “IGI-certified diamonds” establishes the reporting requirement, but it leaves the shape, size, quality, quantity and intended use open.

Include the practical details of the order, particularly where the diamonds must fit existing settings or satisfy a customer’s agreed specifications. If you are purchasing several stones, explain whether each diamond can be selected independently or whether they need to match.

IGI states that information about growth process and treatments can be included in the report comments upon request. If these details are essential to your buying specification, ask for the relevant documentation to be checked when the stones are shortlisted. IGI laboratory-grown diamond reporting

For example, an enquiry might request six oval diamonds within an agreed carat and grade range, each with an individual IGI report, to form three visually matched pairs. That gives the supplier a clearer brief than a request for six diamonds described only as “certified”.

Ask for an itemised selection connecting each stock reference to its IGI report number, measurements and quotation. This becomes particularly useful when several diamonds have similar headline grades or when alternatives are added during the discussion.

Open IGI’s official website and use its report verification function to review the record associated with each number. Compare that information with the proposed stone list, including the stated origin, shape, weight and relevant grading details. IGI report verification guidance

The online record and the physical diamond require different checks. A database lookup retrieves report information; it cannot inspect the stone delivered to your business. Where a laser inscription is recorded, have it checked under suitable magnification and compared with the report. IGI describes inscription as a means of linking a diamond to its identifying information. IGI Laserscribe guidance

Also request photographs or video of the actual stones where available. Use these to assess suitability for the order, especially when outline, apparent size or consistency between several diamonds matters.

If your order requires every loose diamond to be individually IGI graded, make that requirement explicit. Ask for a separate report number against every relevant line in the final stone list.

This matters when purchasing pairs or several diamonds together. The documentation should make it clear which report belongs to which stone, rather than leaving your team to work out the allocation after delivery.

Matching is an additional selection requirement. Two diamonds can share headline grades while still needing a closer comparison of measurements, outline and appearance. For pairs, request images taken together under consistent conditions and agree the characteristics that matter most to the finished design.

Also distinguish individual loose-stone reports from documentation for finished jewellery. IGI’s jewellery reports describe the complete article, and some assessments are made as the mounting permits. The report type should match what your purchase specification requires. IGI jewellery report guidance

For broader parcel, melee and production requirements, visit our wholesale lab-grown diamonds page.

A useful wholesale quotation should connect the price to the proposed diamond and its report number. Comparing offers by carat weight and the IGI name alone can overlook differences in measurements, grades, appearance and commercial terms.

Check whether the amount is quoted per stone or per carat, which currency applies and how long the offer remains valid. For several diamonds, request individual prices and the order total so you can assess the selection clearly.

Establish what the quotation includes. Relevant items may include report delivery, shipping, insurance, taxes and any destination charges. If additional assessment or documentation is requested, confirm whether that changes the cost or timing.

An IGI grading report supplies information about the diamond’s characteristics; it is not itself an appraisal. Your purchase price and eventual selling price remain separate commercial decisions. IGI’s explanation of reports and appraisal

For the wider factors involved in comparing diamond prices, see our lab-grown diamond prices guide.

Before confirming an order, reconcile the final stone list with the diamonds you approved. Record the stock references, IGI report numbers and agreed specifications, particularly if substitutions or revised selections have been discussed.

Ask for confirmation of availability, payment terms, dispatch arrangements and any inspection or return conditions that apply. Keep these details with the quotation so your purchasing and production teams work from the same information.

On receipt, check the stones and their accompanying documentation against that record before proceeding with setting or onward supply. If a report number, measurement or other detail differs from the agreed order, resolve the discrepancy with the supplier before using the stone.

For repeat orders, retain the purchasing specification as well as the previous reports. A new diamond should be assessed against the requirement for the new order, even when it is intended to replace or resemble an earlier selection.

Contact our Antwerp team with your required shapes, carat ranges, grades and quantities. Include your preferred currency, delivery destination and any requirement for individual reports, matching or documented growth method.

Uniglo Diamonds is located at Hoveniersstraat 30, Suite 662/Bus 250, 2018 Antwerp, Belgium. Contact the team before arranging an in-person visit.

Request an IGI wholesale quote · Browse diamond inventory

Email: suraj@uniglodiamonds.com