Lab-Grown Loose Diamonds
Round, oval, emerald, pear, marquise and fancy cuts. Available in 4C ranges with IGI/GIA certificates. Inventory list on request.
Small-Batch Custom Jewelry Factory
The low-MOQ factory that small wholesalers and independent designers actually want: mix styles freely in one order, test new designs from a single piece, and scale only what sells. IGI/GIA certified stones, in-house CAD to finished jewelry.
Product Catalog
All stones are laboratory-grown, clearly disclosed, and shipped with certification. Prices on request — contact us for wholesale rates and MOQ.
Round, oval, emerald, pear, marquise and fancy cuts. Available in 4C ranges with IGI/GIA certificates. Inventory list on request.
Engagement, wedding bands and custom designs in 14K/18K gold & platinum. Your drawings or samples welcome.
Tennis bracelets, bangles and flexible designs. Custom lengths and stone sizes for your market.
Studs, drops, hoops and huggies. Pairs matched by color and clarity, ready to retail.
Pendants, tennis necklaces and station styles. Custom center stones and metal weights available.
Send us a drawing, photo or sample — our team will quote within 24 hours.
Start Your OrderAbout the Factory
HST is an integrated lab-grown diamond jewelry factory where small orders are our daily business, not a favor. Your 5-style mixed test order gets the same CAD team, stone sourcing, hand setters and QC as any bulk order — every step under one roof, so quality stays consistent however small you start.
OEM / ODM Service
Designed for small wholesalers and independent designers: bring a sketch, photo or sample — we handle CAD, stone sourcing, setting and packing. From 1 piece per style, mix styles freely, your logo on every piece and box.
Drawing, photo or physical sample
3D render, sample in 7–10 days
15–30 day lead time after approval
Your logo, box & certificate card
Free CAD within 3 days of inquiry · 1 pc per style · Sample fee refundable · NDA on request
Trust & Quality
All stones are laboratory-grown and clearly disclosed as "Lab-Grown Diamond". Certificate numbers can be verified online — just ask.
FAQ
Yes — mixing is exactly what we're built for. Loose lab-grown diamonds: from 1 ct. In-stock finished jewelry: from 1 pc per style. Custom OEM/ODM new designs: from 1 pc per style. Order 10 pieces across 10 different styles if you like — test your market without dead-stock risk. Only custom packaging requires 500 pcs.
Speed matters when you're testing new styles. In-stock loose diamonds: 2–5 business days. In-stock finished jewelry: 3–5 business days. Custom OEM/ODM: CAD drawing 2–3 days → sample 7–12 days → mass production 15–25 days after sample approval. Reorders of existing designs: 10–20 days.
Yes — samples are how most of our customers start. In-stock samples ship immediately (you pay shipping only). Custom sample: USD 50–200 depending on complexity, 7–12 days lead time. The sample fee is fully refundable on your first production order.
Your design belongs to you. Custom designs are never listed in our catalog, never shown to other customers, and never reproduced for anyone else. NDA (Non-Disclosure Agreement) available on request before you share any sketch or CAD. Your CAD files, molds and samples remain your property.
Small orders are welcome, not penalized. Bulk orders: 30% deposit + 70% balance before shipment by T/T. New OEM molds: 50% upfront, 50% on sample approval, then 30%/70% for production. Samples and trial orders: PayPal, Western Union, or Alibaba Trade Assurance. Large orders (USD 30k+): L/C at sight. Currency: USD, EUR, or RMB.
Yes. Loose lab-grown diamonds ship with IGI or GIA grading reports. Finished jewelry includes a quality assurance card. All certificate numbers are verifiable online at the issuing lab's official website.
DHL / FedEx / UPS / SF Express for Asia. 3–7 business days delivery worldwide, full declared value with shipping insurance. Tracking number within 24h of dispatch. We handle China export customs; you handle import duties on your side. Free shipping for orders over USD 3,000.
Reorders of existing designs: 10–20 days, no new sample needed — your CAD files and molds stay on file, so piece #100 looks exactly like piece #1. Quality: 100% inspection before shipment, free repair within 30 days of receipt for manufacturing defects.
Get a Quote
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