For the trade

Gemstone Supply & Jewellery Manufacturing for the Trade

Casa Jewels supplies natural and lab-grown gemstones and manufactures fine jewellery for brands, retailers and designers from the Gemopolis Free Zone, Bangkok.

  • Gemopolis Free Zone, Bangkok
  • TGJTA & GIT member
  • Natural & lab-grown stones
  • Insured worldwide shipping

What we do

Two services, one Bangkok team

Calibrated pink sapphires by Casa Jewels

Gemstone supply

  • Natural and laboratory-grown gemstones and diamonds
  • Sapphires, rubies, emeralds, spinels, tourmalines, garnets and more
  • Calibrated stones matched by size, shape and colour for repeat production
  • Cutting and recutting to improve proportions and usability
Gemstone supply
Gold castings on the casting tree after investment casting

Jewellery manufacturing

  • CAD modelling and production-ready files
  • Casting, assembly and laser work in gold, platinum and silver
  • Stone setting: pavé, micro pavé, prong, bezel, channel and invisible
  • Private label production, from one-off pieces to small-to-medium runs
Manufacturing

Services

Everything a production partner should cover

CAD & product development

CAD modelling and development for custom pieces, private label collections and manufacturing-ready files.

Custom manufacturing

Fine jewellery in gold, platinum and silver using casting, assembly, laser work, stone setting and hand finishing.

Gemstone sourcing

Natural and laboratory-grown diamonds and gemstones, including calibrated stones for repeat production.

Cutting & recutting

Gemstone cutting and recutting to improve brilliance, proportions and presentation.

Stone setting & finishing

Setting, polishing, rhodium plating and final inspection of setting security and finish.

Repair & restoration

Resizing, rebuilding settings, polishing and structural restoration.

Materials: 9K, 10K, 14K and 18K gold · Platinum PT950 · Sterling silver · Natural and lab-grown diamonds · Moissanite · Coloured gemstones

High gold prices

Lighter designs, same look

Send us a design or model and your target weight. We can suggest a lighter version in CAD, with open galleries, shaped shanks, a lower karat or a different metal, while keeping strength and stone security where it matters.

Who we work with

Built for jewellery businesses

Jewellery brands

Development and production support for established and emerging brands.

Retailers & boutiques

Production, sourcing and replenishment for shops and online stores.

Designers & studios

Technical development and production for independent designers.

Private clients

Looking for a single piece for yourself? See our custom commission service.

How a trade order works

From brief to insured delivery

  1. 01

    Brief

    Send stone type, sizes, quantities, metal, references and timeline.

  2. 02

    Quote & stones

    We confirm pricing, stone selection and your schedule in writing.

  3. 03

    CAD & approval

    For manufacturing, you approve the CAD model before production starts.

  4. 04

    Production

    Casting, setting and finishing at our Bangkok workshop.

  5. 05

    Quality control

    Setting security, finish, proportions and order details are checked.

  6. 06

    Insured delivery

    Shipped insured and tracked via DHL, FedEx or specialist secure logistics.

CAD model
2–5 working days (longer for complex designs)
Production
2–4 weeks after CAD approval

Minimum quantities, lead times and the payment schedule depend on the project and are confirmed in your written quote.

Trade fairs 2027

Meet us at the Bangkok Gems & Jewelry Fair

23–27 February and 7–11 September 2027, Queen Sirikit National Convention Center (QSNCC), Bangkok. Book a meeting in advance.

Fair details and meetings

Trade questions

Good to know

Do you supply natural or lab-grown stones?

Both. We work with natural gemstones and diamonds as well as laboratory-grown diamonds, sapphires, rubies, emeralds and other lab-grown stones, and we state clearly which is which.

Is private label work confidential?

Yes. Private label projects are handled discreetly, which is why some of our work is not shown publicly. Ask us for relevant samples or references.

Which payment methods do you accept?

International bank transfer, Thai bank transfer, credit or debit card, PayPal, cryptocurrency, or Escrow.com for added protection on larger orders.

How do you ship?

Every order ships insured and tracked: DHL or FedEx, or specialist secure logistics (Brink's, Malca-Amit, Ferrari Group) for higher-value shipments.

What about import duties, for example into the United States?

Import duties and taxes depend on the destination country and the type of goods, and are normally paid by the importer on arrival. US duty rules for goods from Thailand changed during 2026, so ask us when you request a quote and we will explain the shipping terms and paperwork for your order.

Trade enquiry

Tell us what you need

The more detail you share (stone type, sizes, quantities, metal, timeline), the faster we can quote. We reply on working days, Monday to Friday, Bangkok time.

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