Nivoda Lab Grown Diamond Supplier — Find Uniglo Diamonds on Nivoda

Nivoda is the 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.

Nivoda, the B2B marketplace, powers over 10,000 retailers across more than 70 countries — connecting jewelers with verified diamond and gemstone suppliers through a single digital platform that manages inventory access, order management, logistics, and financing in one place.

Founded in 2017, Nivoda raised $30 million in a Series B funding round led by Avenir Growth Capital — with a 140% year-over-year increase in revenue and an active customer base up 162% year-over-year. The platform has since expanded to Series C funding and now manages millions of transactions annually for jewelry businesses across Europe, North America, Asia, and beyond.

How Does Nivoda Work — Step by Step

Step 1 — Register as a jeweler. Nivoda has no membership fees — competitive pricing, fulfilment, returns, and consolidated shipping and invoicing are all included. Jewelers create a verified professional account and gain immediate access to the full platform inventory.

Step 2 — Search and filter the inventory. Jewelers search across Nivoda's inventory using filters including shape, carat weight, colour grade, clarity grade, certification type, supplier origin, and price range. 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 and guaranteeing the highest margins possible.

Step 3 — Select your preferred supplier. Within Nivoda's inventory, each diamond is listed by a verified supplier. Jewelers can identify preferred suppliers — such as Uniglo Diamonds — and prioritise their inventory within the platform for consistent quality and pricing.

Step 4 — Order and receive. Nivoda 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.

Key Features of the Nivoda Platform for Jewelers

Nivoda Connect serves as a strategic bridge, connecting a jeweler's Shopify store directly to the world's diamond and gemstone supply. The platform is designed not just to display products, but to empower merchants to build a premium custom jewelry business.

Nivoda recently debuted Nivoda Express, a new fulfilment service which enables two to three-day delivery on select stones — making it one of the fastest certified diamond delivery services available to European and global jewelers.

Through Nivoda Capital, retailers have access to embedded credit directly inside the Nivoda platform — smart, flexible payment terms designed for the way the jewellery industry really works. Retailers can apply in minutes via the Finance Dashboard or through their dedicated account manager — with flexible 30, 60, or 90-day payment terms available.

How Many Diamonds Are Available on Nivoda?

Nivoda offers over 1.6 million natural, lab-grown and melee diamonds across verified suppliers from India, China, Israel, Europe, and beyond. For lab grown diamonds specifically, the platform carries a comprehensive range of certified loose stones across all major shapes, carat weights, and grade combinations — including IGI, GIA, and HRD certified goods. Uniglo Diamonds contributes certified Antwerp-manufactured lab grown diamond inventory to this supply — representing the European manufacturer segment of the platform's global supplier network.

Uniglo Diamonds is verified and listed on the Nivoda platform as a certified lab grown diamond supplier. We are based at Hoveniersstraat 30 in Antwerp's diamond district — one of the most recognised diamond addresses in the world — and we supply IGI, GIA, and HRD certified loose lab grown diamonds to jewelers, retailers, and brands across Europe and globally through both the Nivoda platform and direct wholesale relationships.

How to Find Uniglo Diamonds on the Nivoda Platform

Finding Uniglo Diamonds within Nivoda is straightforward for existing platform users.

• Search by supplier name. Log in to your Nivoda account and use the supplier search function. Enter Uniglo Diamonds to locate our verified supplier account and browse our current certified lab grown diamond inventory directly within the platform.
• Filter by Antwerp origin. When searching the broader Nivoda inventory, apply the origin filter and select Antwerp, Belgium to identify Uniglo Diamonds listings alongside other Antwerp-based suppliers. Combined with a certification filter for IGI, GIA, or HRD, this narrows the platform inventory to our specific certified stock quickly.
• Contact Uniglo directly to set up as a preferred Nivoda supplier. Nivoda allows jewelers to establish preferred supplier relationships within the platform — streamlining future ordering and enabling direct communication with the supplier. Contact our Antwerp team at suraj@uniglodiamonds.com or +32 03 500 91 07 to discuss establishing a preferred supplier arrangement both through Nivoda and as a direct account.

What Makes Uniglo One of Nivoda's Strongest Certified Lab Grown Diamond Suppliers

Not every supplier listed on Nivoda is equal. The platform hosts verified suppliers from dozens of countries — but the quality of individual suppliers, their certification standards, manufacturing credentials, and supply chain accountability varies significantly. Here is precisely what distinguishes Uniglo Diamonds within the Nivoda supplier network.

• Direct manufacturer — not a reseller. Most suppliers on any diamond trading platform are resellers or distributors who purchase from manufacturers and list on the platform for a margin. Uniglo Diamonds is a direct manufacturer — we produce certified lab grown diamonds in our own Antwerp facility. When jewelers source from Uniglo on Nivoda they access manufacturer-level pricing with no reseller markup between the manufacturer and their purchase order.
• Tri-certification: GIA, IGI, and HRD. Most Nivoda suppliers carry IGI certified inventory as their sole certification standard. Uniglo Diamonds lists stones certified by all three globally recognised grading authorities — GIA, IGI, and HRD — giving jewelers sourcing through Nivoda significantly more specification flexibility for diverse market requirements.
• 30+ years of Antwerp diamond manufacturing. Our manufacturing and quality assessment capabilities were built over three decades in Antwerp's natural diamond trade — the most rigorous quality environment in the world. That expertise applies to every lab grown diamond we list on Nivoda and is a meaningful differentiator from platform suppliers without equivalent manufacturing heritage.
• Full shape and specification range. Uniglo Diamonds maintains certified Nivoda inventory across all major shapes — round brilliant, oval, cushion, pear, princess, emerald, asscher, marquise, radiant, and heart — across the full commercial range of carat weights, colour grades, and clarity grades.

Why Buying From a Direct Antwerp Manufacturer on Nivoda Matters

For jewelers who use Nivoda as their primary sourcing platform, the identity of the supplier behind each listed stone is the most important quality variable on the entire platform. A certificate confirms the grade — but it does not confirm the manufacturing process, the cutting quality beyond what the grade captures, or the supply reliability for future orders.

An Antwerp manufacturer like Uniglo Diamonds brings institutional quality context that a certificate alone cannot provide. Antwerp processes approximately 84% of the world's rough diamonds. The cutting and polishing standards applied here represent the global benchmark — developed over five centuries of manufacturing expertise. HRD, one of the three globally recognised grading authorities, is headquartered here. Choosing Uniglo Diamonds as your preferred Nivoda supplier means sourcing from the city that set the world standard for diamond quality, with 30 years of verified manufacturing history behind every stone listed.

Shapes Available Through Uniglo on Nivoda

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

Certifications Available — IGI, GIA and HRD on Every Stone

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

For the European market, IGI certification is our most commonly listed standard on Nivoda — widely accepted by Belgian, Dutch, German, French, and UK jewelry retailers as the primary quality document for lab grown diamonds. GIA certified stones are available for buyers targeting premium or US-facing market segments. HRD certified stones carry particular authority for Belgian and European trade buyers.

Carat Weights, Colour Grades and Clarity Grades Available

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 span D through J for colorless and near-colorless applications, covering everything from investment-grade D colorless through to the commercially popular G-H near-colorless range that offers excellent visual performance at accessible wholesale price points. Clarity grades span IF through SI — from investment-grade flawless specification through to eye-clean SI1 commercial goods for mainstream jewelry retail.

CVD vs HPHT — Which Manufacturing Method Does Uniglo List on Nivoda?

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 retail customers — or who are making purchasing decisions based on current market pricing dynamics between CVD and HPHT goods — our explicit method identification on every listing provides the clarity needed to purchase intelligently.

How Are Diamonds Priced on Nivoda?

Diamonds on Nivoda are priced by each individual verified supplier. Pricing reflects each supplier's wholesale rate plus any platform transaction component. Nivoda offers competitive pricing with no membership fees — the platform's cost structure is designed to keep the total transaction cost lower than traditional broker-mediated sourcing. For jewelers evaluating Nivoda pricing, comparing specific certified stones listed by different suppliers on the platform gives an accurate picture of the range of wholesale pricing available for any given specification.

Is Buying Direct From Uniglo Cheaper Than Through Nivoda?

For standard certified stone purchases, sourcing through the Nivoda platform is a convenient and competitively priced option that includes the platform's logistics and delivery infrastructure. For volume buyers, matched parcel orders, custom specifications, and large regular purchasing commitments, ordering directly from Uniglo Diamonds in Antwerp typically provides better per-stone pricing — because direct orders remove all platform components entirely, leaving pure manufacturer-to-buyer pricing with no intermediary cost.

Many jewelers use both channels — purchasing standard certified inventory through Nivoda for platform convenience while placing custom, matched parcel, and large volume orders directly with Uniglo Diamonds for the best available pricing and deepest supply relationship. Our Antwerp team supports both purchasing models for every wholesale account.

Nivoda Payment Terms and Financing Options

Through Nivoda Capital, retailers have access to embedded credit directly inside the Nivoda platform with flexible 30, 60, or 90-day payment terms. Austin Cordle of Oakmont Jewelers explains: "Nivoda's credit line has taken the pressure off cash flow and made it easy to secure the inventory I need, exactly when I need it. The flexibility to choose whether I pay upfront, in 30 days, or in 60 days is incredibly convenient and gives me full control."

For jewelers who want financing on direct purchases outside the Nivoda platform, Uniglo Diamonds also offers its own flexible financing arrangements for qualified wholesale buyers — allowing significant certified diamond inventory to be built without full upfront capital commitment. Contact our Antwerp team directly to discuss financing terms for direct purchasing.

Step 1 — Register on Nivoda as a Verified Jeweler

The setup is designed to be fast and intuitive, with many jewelers getting operational very quickly. Registration on Nivoda is free — Nivoda has no membership fees. Jewelers provide professional verification details to confirm trade buyer status, create their account, and gain immediate access to the full platform inventory including Uniglo Diamonds' certified lab grown diamond listings.

Step 2 — Search and Find Uniglo Diamonds on the Platform

Once registered, search for Uniglo Diamonds by supplier name in the platform's supplier directory. Alternatively, use the inventory search with filters for Antwerp origin and IGI, GIA, or HRD certification to locate our listings within the broader platform inventory. Our round brilliant, oval, cushion, and all major shape listings are available across the full carat and grade range specified above.

Step 3 — Order Through Nivoda or Contact Uniglo Directly

For standard inventory purchases, place your order directly through the Nivoda platform — using the platform's order management, invoicing, and delivery infrastructure. For custom requirements — specific grade sourcing, matched parcels for manufacturing applications, volume orders, or Antwerp showroom visits — contact Uniglo Diamonds directly at suraj@uniglodiamonds.com or +32 03 500 91 07 before or alongside your Nivoda order placement.

Step 4 — Quality Control, Delivery and Documentation

Once you have purchased your diamonds, you can leave it to Nivoda's team of experts to tend to the entire quality control, invoice and delivery process. For Uniglo Diamonds specifically, every stone shipped through Nivoda carries a current grading report from GIA, IGI, or HRD, with the certificate number independently verifiable online before and after delivery. Every stone has a confirmed laser inscription on the girdle matching the certificate number — physical verification that the stone received matches the certificate on file.

When to Source Through the Nivoda Platform

• Sourcing through Nivoda works best when you want platform logistics management — consolidated shipping, invoicing, and delivery handled by Nivoda's operations team.
• When you want access to Nivoda Capital's embedded financing with 30, 60, or 90-day payment terms built into the platform.
• When you are purchasing standard certified inventory in shapes and grades available from our current Nivoda listings.
• And when the convenience of managing your entire diamond supply through a single platform interface is a priority for your business operations.

When to Order Directly From Uniglo Diamonds in Antwerp

• Ordering directly from Uniglo Diamonds is the stronger option when you need matched parcels for jewelry manufacturing — tennis bracelets, eternity rings, pavé settings — where precise grade consistency across the full set requires direct manufacturer preparation.
• When you are placing large volume orders where direct manufacturer pricing gives you a measurable cost advantage over the platform-mediated equivalent.
• When you have custom cutting or specification requirements that require direct communication with our Antwerp manufacturing team.
• When you want to visit our Antwerp showroom and inspect certified stones in person before purchasing.
• And when you want to establish a direct supply relationship with full manufacturer accountability independent of any third-party platform.

How to Use Both Options Together

The most effective approach for many jewelers is using both channels in parallel — sourcing standard certified inventory through Nivoda for platform convenience and financing, while maintaining a direct account relationship with Uniglo Diamonds for custom orders, matched parcels, volume purchasing, and showroom visits. Our Antwerp team actively supports jewelers who use this dual-channel approach and can help you identify which purchasing route best serves each specific order requirement.

Direct Manufacturer — Not a Reseller or Broker

The single most important differentiator between Uniglo Diamonds and most other suppliers listed on the Nivoda platform is our manufacturing status. We produce certified lab grown diamonds in our own Antwerp facility — we do not purchase from third-party manufacturers and relist on the platform for a margin. This means every stone Uniglo lists on Nivoda is priced at manufacturer level, with direct quality accountability from the company that actually made it.

30+ Years of Antwerp Diamond Manufacturing Heritage

Uniglo Diamonds has been part of Antwerp's diamond district for over three decades. Our physical presence at Hoveniersstraat 30 — one of the most recognised addresses in the global diamond trade — is not a marketing claim. It is a verifiable, 30-year business history at the centre of the world's most established diamond manufacturing and trading infrastructure. For jewelers who want a Nivoda supplier they can visit, inspect, and build a long-term relationship with — Uniglo Diamonds is one of the very few platform suppliers who can offer that.

Tri-Certification — GIA, IGI and HRD on Every Stone

Uniglo Diamonds lists certified stones on Nivoda from GIA, IGI, and HRD — all three globally recognised grading institutions. Nivoda Connect accesses essential data required for its core function, such as product information to sync inventory and order details for fulfilment — meaning every certification detail Uniglo provides is reflected accurately in our Nivoda listings, visible to platform buyers at the point of purchase.

Full Shape Range and Consistent Certified Inventory

Uniglo Diamonds maintains certified Nivoda inventory across all major shapes and across a broad range of carat weights, colour grades, and clarity grades. Jewelers building complete lab grown diamond inventory through Nivoda can cover their full specification requirements from a single Antwerp manufacturer account — round brilliant for engagement rings, oval for fashion jewelry, cushion and pear for bespoke commissions — without managing multiple supplier relationships for different shape categories.

Custom Orders and Matched Parcels Beyond the Platform

For jewelry manufacturers producing multi-stone pieces, Uniglo Diamonds provides matched parcel capability beyond what standard Nivoda platform ordering can accommodate. Direct contact with our Antwerp team before placing the platform order allows us to prepare the appropriate matched selection — consistent colour, clarity, and cut grades across the entire set — and confirm availability in advance. This manufacturing-level capability is one of the most commercially valuable services Uniglo offers to Nivoda-connected jewelers.

Whether you are an existing Nivoda user looking to identify the strongest certified lab grown diamond supplier 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 both through the platform and through a direct wholesale relationship.

Search for Uniglo Diamonds on Nivoda today — or contact our Antwerp team directly to discuss your requirements, arrange a showroom visit, or establish a direct supply account alongside your Nivoda purchasing.

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.