Find Uniglo Diamonds on Nivoda — Antwerp's Certified Lab Grown Diamond Manufacturer

Nivoda is an online diamond trading platform dedicated to jewelry professionals. It allows jewelers to search for and purchase from an inventory of over 1.6 million natural, lab-grown, and melee diamonds at the best price from verified suppliers all over the world with zero inventory risk.

Founded in 2017 by David Sutton and Andre Woons, Nivoda was born from first-hand industry frustrations. Sutton, a seasoned entrepreneur with 16+ years in jewellery, had already co-founded Taylor & Hart, one of the first digital-first custom jewellery retailers. Together, they envisioned a system that simplifies sourcing, procurement, logistics, and financing, all within a single platform.

Today, Nivoda hosts 2.5+ million diamonds and coloured gemstones, including exclusively certified WISE lab-grown diamonds. Retailers can source stones, reserve inventory, track shipments, manage invoices, and even access made-to-order jewellery manufacturing, all from one interface.

For jewelers, Nivoda solves one of the most persistent challenges in the diamond trade — access to a broad, verified supply of certified diamonds without the logistical complexity, capital intensity, and relationship requirements of traditional diamond sourcing. Nivoda also solves the logistical inconvenience and additional expense that most businesses face when buying diamonds internationally. Once you have purchased your diamonds, you can leave it to their team of experts to tend to the entire quality control, invoice and delivery process.

How Nivoda Works — Step by Step

Step 1 — Register as a jeweler. Nivoda operates as a B2B platform exclusively for jewelry professionals. Registration is free — the pricing model provides a risk-free entry with its Starter plan, ideal for sourcing curated items. Jewelers create a verified account and gain immediate access to the full platform inventory.

Step 2 — Search the inventory. Jewelers can showcase any diamond and gemstone in the collection to in-person customers with high-quality 360-degree videos and zero inventory risk — always having exactly what customers are looking for, being as competitive as needed to win every sale, and guaranteeing the highest margins possible.

Step 3 — Select your supplier. Within Nivoda's inventory, each diamond is listed by a verified supplier. Jewelers can filter by supplier, certification, shape, grade, carat weight, and price — and can build preferred supplier relationships with those whose quality and pricing consistently meet their requirements. This is where finding Uniglo Diamonds within the platform becomes commercially valuable.

Step 4 — Order and receive. Nivoda manages the entire quality control, invoice and delivery process — handling logistics, customs, insurance, and delivery so jewelers receive certified stones without managing the complexity of international diamond shipping themselves.

Nivoda's Showroom app provides jewelers with a premium, customizable platform backed by Nivoda's industry-leading diamond selection and pricing. With access to over 1.4 million natural and lab-grown diamonds, Showroom ensures jewelers never lose a sale by offering customers an unmatched inventory of diamonds in real time.

By connecting their store to the Nivoda platform, jewelers gain access to global inventory, allowing them to expand their product offering with real-time search and display, customizable filters, and dynamic pricing markup options.

Nivoda sets itself apart by combining every critical function of the trade — inventory access, order management, logistics, manufacturing, certification, and embedded finance — into one system. For jewelers who want to manage their entire diamond sourcing operation through a single platform, Nivoda represents a genuinely compelling proposition — and the quality of the suppliers available on the platform is the most important variable in how well it works for any individual jeweler's business.

Not every supplier listed on Nivoda is equal. The platform hosts verified suppliers from around the world — but the quality of individual suppliers, their certification standards, their manufacturing credentials, and their reliability varies significantly. Here is exactly what distinguishes Uniglo Diamonds from the broad range of suppliers available on the Nivoda platform.

Direct Antwerp Manufacturer — Not a Reseller or Broker

Uniglo Diamonds is a direct manufacturer based in Antwerp's diamond district — not a reseller purchasing from other manufacturers and listing on Nivoda for a margin. This distinction has direct commercial implications for jewelers sourcing through the platform.

When you source from a direct manufacturer like Uniglo on Nivoda, you are accessing manufacturer-level pricing — the lowest price tier in the supply chain — because there is no intermediary markup between the person who made the diamond and your purchase order. Most suppliers on any trading platform are resellers or distributors — they add a margin layer on top of manufacturer pricing. Uniglo Diamonds does not.

For jewelers using Nivoda, this means that sourcing specifically from Uniglo Diamonds within the platform gives you access to a lower effective cost per carat than sourcing from reseller suppliers listing comparable certified goods. That cost difference compounds across every order you place — translating directly into stronger gross margins on every stone you sell at retail.

30+ Years of Antwerp Diamond Manufacturing Heritage

The diamond industry has long relied on marketplaces like Rapnet for pricing data and smaller players for virtual inventory solutions. What distinguishes the most valuable suppliers within any diamond marketplace — including Nivoda — is not simply the availability of certified stones but the depth of manufacturing expertise and quality control behind every stone listed.

Uniglo Diamonds has operated from Hoveniersstraat 30 in Antwerp's diamond district for over 30 years. Our manufacturing and quality assessment capabilities were built in the natural diamond trade — where the cutting, grading, and quality standards applied in Antwerp are the most rigorous in the world. That expertise applies directly to every lab grown diamond we list on Nivoda.

For jewelers who have experienced quality inconsistencies with some platform suppliers — stones that grade slightly below their certificates under careful inspection, matched parcels that are less consistent than described — the Antwerp manufacturing heritage behind Uniglo Diamonds is a meaningful and practical quality assurance signal.

Tri-Certification: GIA, IGI, and HRD

Uniglo Diamonds lists certified stones on Nivoda with grading reports from GIA, IGI, and HRD — the three globally recognised grading authorities. Most platform suppliers carry IGI certified inventory as their primary or only certification. Uniglo's ability to supply all three certifications gives jewelers sourcing through Nivoda significantly more specification flexibility — particularly valuable for jewelers who sell into multiple markets with different certification preferences.

Full Shape and Specification Range

Uniglo Diamonds maintains certified inventory on Nivoda across all major shapes — round brilliant, oval, cushion, pear, princess, emerald, asscher, marquise, radiant, and heart — and across the full commercial range of carat weights, colour grades, and clarity grades. Jewelers building lab grown diamond inventory through Nivoda can cover their complete specification requirements from a single Antwerp manufacturer account rather than managing multiple supplier relationships for different shapes and grades.

Direct Relationship Beyond the Platform

One of the limitations of any marketplace-based sourcing relationship is that the platform intermediates the supplier relationship — which can limit the depth of communication, customisation, and commercial flexibility available to the buyer. Uniglo Diamonds offers Nivoda-sourced jewelers the option to establish a direct account relationship alongside their Nivoda purchasing — allowing direct communication with our Antwerp team on custom requirements, matched parcels, specific grade sourcing, and pricing conversations that go beyond the platform's standard interface.

Jewelers who want both the convenience of Nivoda's platform infrastructure and the deeper supplier relationship available from a direct manufacturer account can have both — through Uniglo Diamonds.

Lab Grown Diamond Shapes Available on Nivoda Through Uniglo

Jewelers browsing Uniglo Diamonds inventory on Nivoda can find certified loose lab grown diamonds in all major shapes. Round brilliant is our highest-volume listing — covering the broadest range of carat weights and grade combinations for the most commercially important shape in the lab grown market. Oval is our second highest-volume listing, reflecting the growing commercial importance of this shape in European and global engagement ring markets. Cushion, pear, emerald, princess, asscher, marquise, radiant, and heart are all listed across a range of carat weights and grades.

Certification Available Through Uniglo on Nivoda

Every stone Uniglo Diamonds lists on Nivoda carries a current grading report from IGI, GIA, or HRD. Certificate numbers are verifiable independently on the respective laboratory websites before any purchase is confirmed. Laser inscriptions are confirmed on every stone — the IGI, GIA, or HRD report number is inscribed on the diamond's girdle, visible under 10x magnification, providing physical verification that the stone matches its certificate.

Carat Range and Grade Availability

Uniglo Diamonds lists certified lab grown diamonds on Nivoda across the full commercial carat range — from 0.30 carat melee through to 5+ carat premium solitaires. Colour grades available span D through J for colorless and near-colorless applications, with fancy colored lab grown diamonds available on request. Clarity grades span IF through SI — covering everything from investment-grade flawless specifications to eye-clean SI1 commercial goods for mainstream jewelry retail.

Manufacturing Method

Both CVD and HPHT certified lab grown diamonds are listed by Uniglo Diamonds on Nivoda. Manufacturing method is explicitly identified on every grading certificate and in our Nivoda listing specifications. For jewelers who need to communicate manufacturing method to their retail customers — or who are managing their purchasing strategy around the current market dynamics between CVD and HPHT pricing — Uniglo's explicit method identification on every listing provides the information needed to purchase intelligently.

If you are an existing Nivoda user, finding Uniglo Diamonds on the platform is straightforward.

• Search by supplier name. Log in to your Nivoda account and use the supplier search function to find Uniglo Diamonds. Our full inventory of certified loose lab grown diamonds is listed under the Uniglo Diamonds supplier account.
• Filter by certification and origin. When searching the broader Nivoda inventory, filter by GIA, IGI, or HRD certification and select Antwerp as the origin to identify Uniglo Diamonds listings alongside other Antwerp-based suppliers on the platform.
• Contact Uniglo directly to set up as a preferred supplier. Nivoda allows jewelers to establish preferred supplier relationships within the platform — which streamlines future ordering, enables direct communication with the supplier, and can unlock pricing advantages for volume purchasing. Contact our Antwerp team directly at suraj@uniglodiamonds.com or +32 03 500 91 07 to discuss establishing a preferred supplier arrangement through Nivoda and outside the platform.
• Request a matched parcel through direct contact. For jewelers sourcing matched parcels for manufacturing applications — tennis bracelets, eternity rings, pavé settings — direct contact with our Antwerp team before placing the Nivoda order allows us to prepare the appropriate matched selection and confirm availability across the specific grades you need, before the order is formally processed through the platform.

Many jewelers who find Uniglo Diamonds through Nivoda eventually ask whether there is a difference between sourcing through the platform and ordering directly from us. The honest answer is: both options work, and the right choice depends on your business model and purchasing preferences.

Sourcing through Nivoda gives you the platform's logistics infrastructure, consolidated invoicing, and the convenience of managing your entire diamond supply from a single interface. Nivoda offers flexible 30, 60, or 90-day payment terms through their embedded trade credit facility — which can be valuable for jewelers managing cash flow alongside inventory investment. If you are already using Nivoda as your primary sourcing platform and want to source from Uniglo Diamonds within that existing infrastructure, the platform route is completely appropriate.

Sourcing directly from Uniglo Diamonds gives you direct manufacturer pricing without any platform component, the ability to communicate directly with our Antwerp diamond team on custom requirements, access to Uniglo's own financing options, the ability to visit our Antwerp showroom and inspect stones in person, and a direct supply relationship that is not dependent on any third-party platform's continued operation or pricing model.

For many jewelers, the ideal arrangement is both — using Nivoda for standard purchasing convenience while maintaining a direct relationship with Uniglo Diamonds for custom orders, matched parcels, large volume purchases, and Antwerp showroom visits. Our team supports both sourcing models for our wholesale customers.

For jewelers who are evaluating Nivoda as a sourcing platform for the first time and want to understand what the platform offers before registering, here is an honest summary of the key facts.

• Scale: Nivoda connects over 10,000 retailers in 70+ countries with millions of diamonds and gemstones. The platform's inventory depth — over 1.6 million natural, lab-grown and melee diamonds — makes it one of the largest diamond sourcing platforms available to jewelry professionals.
• Pricing model: Nivoda uses a freemium model, offering a free Starter plan and paid tiers that add advanced capabilities for scaling businesses. The Silver plan costs $249 per month for full access to advanced features including the ring builder and automated ordering.
• Logistics: Nivoda manages the entire quality control, invoice and delivery process for every order placed through the platform — handling international shipping, customs, insurance, and delivery consolidation. This is a significant operational convenience for jewelers who would otherwise manage these logistics themselves.
• Finance: With a new $60 million financing facility, Nivoda now offers embedded trade credit, allowing jewelers to access flexible 30, 60, or 90-day payment terms — effectively removing the biggest barrier to growth for smaller retailers.
• Technology: Nivoda's made to order interface includes live configuration, clear pricing, and product renderings that help jewelers quote confidently and sell faster. The platform has expanded significantly beyond pure diamond sourcing — now covering gemstones, melee, and manufactured jewelry as well.
• Supplier quality: The platform hosts verified suppliers from multiple countries. Quality, certification standards, and manufacturing accountability vary between suppliers. For jewelers who prioritise certified quality and direct manufacturing accountability, identifying and prioritising specific suppliers — like Uniglo Diamonds — within the platform's broad inventory is the most important step in using Nivoda effectively.

Nivoda's platform gives jewelers access to verified suppliers from across the globe — India, China, Israel, the United States, Europe, and beyond. Understanding why an Antwerp-based supplier like Uniglo Diamonds represents a distinctly stronger sourcing choice within that global marketplace helps jewelers make better supplier decisions on the platform.

Nivoda sets itself apart from legacy players like RapNet, IDEX, and GemFind by combining every critical function of the trade into one system. Within that system, the quality of outcomes for any jeweler depends fundamentally on which suppliers they choose to source from. A platform is only as good as the suppliers it connects you to.

Antwerp processes approximately 84% of the world's rough diamonds. The cutting and polishing standards applied in Antwerp represent the global benchmark — developed over five centuries of diamond manufacturing expertise concentrated in one of the world's smallest geographic areas. HRD, one of the three globally recognised grading authorities, is headquartered in Antwerp. The Antwerp World Diamond Centre provides institutional oversight and quality standards to the entire Antwerp trade.

When a jeweler sources from an Antwerp manufacturer on Nivoda, they are sourcing from the city that set the global standard for diamond quality — with the institutional oversight, grading infrastructure, and manufacturing expertise to back it up. That is a meaningful differentiation from platform suppliers operating without equivalent institutional context.

Whether you are an existing Nivoda user looking to identify the strongest certified lab grown diamond suppliers on the platform, or a jeweler evaluating Nivoda as a sourcing tool and wanting to understand which Antwerp manufacturers are listed — Uniglo Diamonds is ready to support your sourcing requirements.

Find us on Nivoda by searching for Uniglo Diamonds in the platform supplier directory. Contact our Antwerp team directly to discuss your specific requirements, arrange a showroom visit, or establish a direct supply relationship alongside your Nivoda account.

Contact Uniglo Diamonds:

📍 Hoveniersstraat 30, Suite 662/Bus 250, 2018 Antwerp, Belgium

📧 suraj@uniglodiamonds.com

📞 +32 03 500 91 07

Browse our certified lab grown diamond inventory at uniglodiamonds.com/inventory.

All sourcing inquiries receive a personal response within one business day.