Diamond Supplier in Hong Kong
Wholesale Natural & Lab Grown Loose Diamonds for Central, Kowloon Bay, Tsim Sha Tsui & Across Hong Kong
Mann Gems LLP is a certified natural and lab grown diamond supplier serving jewellery manufacturers, wholesalers, and importers across Hong Kong. We supply loose diamonds in bulk, backed by GIA and IGI certification, ethical sourcing, and 15+ years of experience in the global diamond trade.
Diamond Supplier in Hong Kong: Natural & Lab Grown Diamonds for Wholesale Buyers
Hong Kong runs on trade, and diamonds are no exception. As a tax free port with no import duty on loose stones, it has grown into one of Asia’s busiest gateways for diamond wholesale, cutting, and re-export into mainland China, with the Hong Kong Jewellery & Gem Fair drawing buyers from across the region every year. Jewellery manufacturers and wholesalers here need a supply chain that keeps pace with that volume: certified stock, fast turnaround, and documentation that clears customs without friction.
Mann Gems works with jewellery manufacturers, wholesalers, and retail businesses across Hong Kong, supplying loose diamonds in the shapes, sizes, and grades their production actually calls for. Every stone leaves our hands with certification and clear documentation attached, so there’s nothing to double check on arrival. From a single trial parcel to a running order for a manufacturing line, we aim to be the kind of supplier a Hong Kong business does not have to think twice about.
Diamond Quality Standards
Every diamond supplied natural or lab grown is evaluated against the 4Cs:
- Cut determines how well the diamond reflects light, directly affecting brilliance and sparkle.
- Color graded from colorless to light yellow; less color generally means higher value.
- Clarity refers to internal and external inclusions; fewer inclusions mean a cleaner, more valuable stone.
- Carat the weight of the diamond, with rarity increasing at higher carat weights.
Beyond the 4Cs, our grading process checks finish, symmetry, and overall appearance, so what a Hong Kong buyer receives matches what was quoted.
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What We Supply: Natural & Lab Grown Diamonds
As a certified diamond supplier, we supply both natural and lab grown diamonds, each independently graded and certified, to jewellery manufacturers, wholesalers, and importers across Hong Kong. Here’s what’s available:
Natural Diamonds: Earth Mined Brilliance, Sourced at the Bourse
We supply natural diamonds, formed over billions of years and graded on the 4Cs (Cut, Color, Clarity, and Carat) with certification from a recognised grading laboratory.
Natural diamonds still hold the edge for Hong Kong manufacturers producing bridal and heirloom grade jewellery, where buyers are paying for provenance as much as sparkle.
Lab Grown Diamond Supplier in Iran
Lab grown diamonds are chemically, physically, and optically identical to natural diamonds, created using HPHT or CVD technology instead of natural formation. They’re graded on the same 4Cs and certified by GIA and IGI. Hong Kong buyers have taken to lab grown stock quickly, largely because it lets manufacturers offer certified diamonds at a lower entry price without touching quality. We supply:
- Round and fancy shape lab grown diamonds
- Certified lab grown diamonds with full grading documentation
- Rose cut and mix cut fancy lab grown diamonds
- Loupe clean and white lab grown diamond categories
- Solitaire grade certified lab grown diamonds
Loose Diamond Suppliers in Hong Kong
We supply diamonds as loose diamonds, unset and ungraded into finished jewellery. Hong Kong manufacturers and designers take the raw certified stone from us and set, brand, and sell it under their own name.
Diamond Shapes Available
We hand pick parcels in all eleven diamond shapes that Iranian jewellery manufacturers and retailers order, including loose diamonds for engagement rings, pendants, and bridal jewellery.
ROUND
PRINCESS
CUSHION
OVAL
EMERALD
HEART
PEAR
MARQUISE
ASSCHER
RADIANT
ROSE
Certified Diamond Supply & Wholesale Services in Hong Kong.
Explore diamond sizes, certified loose diamonds, custom sourcing, wholesale supply, and secure packaging for jewellery businesses across Hong Kong.
Our loose diamonds cover a wide carat range for Hong Kong’s different buyer types, from melee stones for pave and accent work up to solitaire grade centre stones. Exact carat availability is confirmed against live stock.
Certification is central to how we supply diamonds internationally. Every certified diamond includes a grading report with a unique, independently verifiable report number. We supply diamonds certified by GIA (Gemological Institute of America) and IGI (International Gemological Institute), across both natural and lab grown categories.
- GIA (Gemological Institute of America) widely regarded as the strictest and most trusted global grading standard.
- IGI (International Gemological Institute) a leading certification body for both natural and lab grown diamonds.
Hong Kong buyers with specific manufacturing requirements can request:
- Custom carat and size ranges matched to production runs
- Specific shape mixes (round, fancy, or a blended assortment)
- Certification-tier selection (GIA or IGI) based on end-market requirements
- Natural, lab grown, or a combined natural + lab grown supply mix
Every customization request is confirmed against live stock and current certification availability, so buyers get an order tailored to their needs without compromising on grading standards.
Mann Gems supplies certified natural and lab grown diamonds to jewellery businesses across Hong Kong, from established trading firms in Central to manufacturers based out of Kowloon Bay.
Districts We Serve
- Diamond Supplier in Central
- Diamond Supplier in Tsim Sha Tsui
- Diamond Supplier in Kowloon Bay
- Diamond Supplier in Causeway Bay
- Diamond Supplier in Sha Tin
- Diamond Supplier in Kwun Tong
- Diamond Supplier in Mong Kok
We deal in loose, natural, and lab grown diamonds for manufacturing, wholesaling, and retail. Order sizes are worked out around what the buyer needs rather than a fixed minimum. Some clients start with a trial parcel before moving to a running bulk order.
Every diamond shipment is carefully packaged to protect stones in transit, with documentation prepared in line with applicable international trade regulations. Shipment docu Every diamond shipment is carefully packaged to protect stones in transit and shipped internationally with insurance coverage. Shipment documentation is aligned with certification reporting, so buyers can check each stone against its grading report the moment it arrives. Given Hong Kong’s status as a free port, customs clearance on loose, unmounted diamonds is generally straightforward, though we recommend confirming current requirements with your customs broker for your specific shipment.mentation is aligned with certification reporting so buyers can verify each stone against its grading report on arrival. Given that international shipping requirements for Iran can vary and change, we recommend confirming current import, customs, and compliance requirements with your local authority before finalizing an order.
Why Choose Mann Gems
Jewellery manufacturers and wholesalers in Hong Kong choose Mann Gems LLP because we pair over a decade of trade experience with certified stock and a supply process that doesn’t need constant follow up.
- 15+ years of experience in the natural and lab grown diamond trade, established in 2005.
- GIA and IGI certified diamonds, independently graded for authenticity and quality.
- Trusted by 1,000+ clients globally, reflecting consistency in supply, grading accuracy, and service.
- Ethically sourced diamonds aligned with Kimberley Process standards.
- Both natural and lab grown diamond supply under one supplier relationship, including for buyers in Hong Kong.
Send Your Diamond
Requirements
Our sourcing team responds within 4 business hours with a curated certified stone list and pricing. All inquiries are strictly confidential.
Natural Diamonds vs Lab Grown Diamonds Quick Comparison
| Factor | Natural Diamonds | Lab Grown Diamonds |
|---|---|---|
| Origin | Formed naturally in the earth’s mantle over billions of years | Created in a controlled lab using HPHT or CVD technology |
| Composition | Pure carbon crystal structure | Identical carbon crystal structure |
| Certification | GIA, IGI | GIA, IGI, GCAL |
| Typical Price Point | Higher, driven by rarity | Generally more accessible per carat |
| Resale Value | Higher and more stable long-term | Lower and more variable |
| Common UAE Buyer | Bridal, heirloom, investment-focused retailers | Fashion, volume, value-focused retail chains |
Find Your Perfect Diamond Parcel
Talk to our Mumbai desk today. We respond within one business hour.
Frequently Asked Questions: Wholesale Diamond Suppliers in Hong Kong
Mann Gems supplies GIA and IGI certified natural and lab grown loose diamonds in bulk, with transparent grading and documentation on every parcel.
All our certified inventory carries an original GIA, IGI, or HRD report. You can verify any report number directly on the relevant lab’s online portal before paying.
The process begins with the buyer sharing carat, shape, and certification requirements, followed by stock matching, grading verification, and quotation at live market rates. Shipping arrangements are confirmed per order in line with current international trade requirements.
It starts with the buyer sharing carat, shape, and certification requirements, followed by stock matching, grading verification, quotation at live market rates, order confirmation, and insured international shipping.
Hong Kong does not charge import duty or GST on loose, unmounted diamonds, which is one reason it functions as a major regional trading and re-export point. We’d still recommend confirming current requirements with your customs broker for your specific shipment.
Yes. We carry round, fancy shape, rose cut, mix cut, and solitaire inventory in both natural and CVD or HPHT lab grown categories.
There’s no fixed MOQ. We supply single solitaires for custom orders and bulk parcels for manufacturers.
Yes. Lab grown diamonds are certified by labs like GIA and IGI, with grading reports covering cut, color, clarity, and carat, and clearly stating the lab grown origin.
Yes. We send HD videos, 360 degree views, and certificate scans over WhatsApp or email, and can arrange a live video call on request.