Jewelry Wholesale Manufacturer & Bulk Fine Jewelry Supplier

Wholesale lab grown diamonds and moissanite — direct from the factory

Holycome is a wholesale supplier and manufacturer of loose lab grown diamonds, moissanite, lab grown gemstones and finished fine jewelry, based in Wuzhou, Guangxi — the city that produces the majority of the world's cubic zirconia, synthetic gemstones and, increasingly, lab grown diamond melee.

We work with two kinds of customers. The first buys loose stones: importers, setters and jewelers who need calibrated parcels of round brilliants, ovals, cushions, pears, marquise, radiants, emerald cuts and princess cuts in consistent color and clarity, with certificates matched stone by stone. The second buys finished jewelry: jewelry brands, chain retailers, duty-free operators and online sellers who need production-ready designs, private-label packaging and predictable replenishment.

Why trade buyers choose a factory instead of a trading company

Buying through a trading company adds a margin and removes your control over production. When you buy directly from our factory you get the real cost breakdown — stone, metal, labour, plating and packing — and you can change any of those variables. That means you can hit a target retail price by adjusting the stone grade or the metal weight instead of simply accepting a quoted number.

It also means accountability. If a parcel does not match the approved sample, there is no third party to blame: our own QC team inspected it, and our own merchandiser signed it off. That single line of responsibility is why our repeat-order rate is high.

Product range at a glance

• Loose lab grown diamonds — CVD and HPHT, 0.01 ct to 5 ct, D–H color, VVS–SI clarity, IGI graded on request
• Loose moissanite — colorless, near-colorless and fancy colors, calibrated melee and large singles, GRA certified
• Lab grown gemstones — emerald, ruby, sapphire, paraiba tourmaline and padparadscha in calibrated sizes
• 925 sterling silver jewelry — rhodium-plated rings, earrings, necklaces, bracelets and tennis lines
• 10K / 14K / 18K gold jewelry — yellow, white and rose gold, engagement rings and bridal sets
• Custom and OEM jewelry — CAD development, private label, custom packaging and branded certificates

How to start a wholesale account

Send us the stone list or design references you are working from, together with your target quantity and destination country. You will receive a costed quotation within 12 working hours, including MOQ, tiered pricing, lead time and shipping options. If you need to validate quality first, order a single sample — the sample cost is credited against your first bulk order above 200 pieces.

Payment is normally 30% deposit with the balance before shipment, settled by T/T, PayPal or Western Union; Alibaba Trade Assurance is available for first orders. Stock items ship in 7–15 days, OEM production in 12–20 days.

Documentation, pricing and compliance

Every parcel ships with a commercial invoice, packing list, certificate copies and — on request — a material declaration stating that our lab grown diamonds and gemstones are synthesized, not mined. This matters at customs in the United States, the European Union, the United Kingdom and Australia, where documentation for lab grown material is scrutinised. We prepare the paperwork before the goods leave, so clearance is not left to chance.