The Carat Source

The sourcing and production desk behind independent jewellers.

Send a brief. We find the stone, make the piece and ship it to your counter, under your name.

Start a brief Book a call

Natural and lab-grown, always described explicitly. Serving the United Kingdom, the European Union and Canada, with the United States next.

Brief TCS-2610-0427

Solitaire for a client in Edinburgh

Stone
Setting
Origin
Delivery
Status
What we do For independent jewellers and brands

A partner behind your brand.

The Carat Source brings diamond sourcing, jewellery production, bespoke development and product content together in one desk in Mumbai. You keep the client and the relationship. We keep the back end moving.

Diamonds

Natural and lab-grown, sourced against your brief from the Mumbai bourse. GIA or IGI reports with every stone.

Jewellery

Trade collections, stock and made-to-order pieces in 14 kt, 18 kt and platinum 950.

Bespoke

Custom design and collection development, from your client's sketch to CAD to the finished piece.

Content

Product imagery and specifications for your own channels, delivered under your name.

Diamond sourcing Concierge, not marketplace

One stone, not a hundred options.

Marketplaces hand you a list and leave you to it. We read the brief, work the bourse in person and send back the two or three stones worth your time, with videos, reports and a landed price.

Selection
Two or three stones per brief, chosen by eye and by report. Never a spreadsheet.
Certification
GIA or IGI report with every stone. Video and photographs on request.
Pairs
Matched within 2% on table and depth, with measurements aligned for earrings and three-stone rings.
Pricing
Quoted landed at your door, in your currency, before you commit.
How sourcing works
Image 01Round brilliant on black, directional light, honest shadow
Production Seven stages, one point of contact

From sketch to shipped, in seven stages.

Your client's custom order becomes our production file. You approve at each stage. We handle the bench, the stones and the paperwork.

  1. 01

    Brief

    Sketch, reference or a conversation. We write the spec with you.

  2. 02

    Design

    Proportions, stone layout and metal confirmed before anything is drawn.

  3. 03

    CAD

    Renders from three angles for your client's approval, revised until right.

  4. 04

    Casting

    Cast in 14 kt, 18 kt or platinum 950 from a resin or wax model.

  5. 05

    Setting

    Stones set under the microscope. Centre stone from your brief or our sourcing.

  6. 06

    Finishing and QC

    Polish, assay-ready marking and a QC report with photographs.

  7. 07

    Shipping

    Insured door to door with export paperwork and origin declarations.

See the full process
Markets Built around how you import

Made for your market.

Shipping lanes, duties, sanctions declarations and hallmarking differ by market. We quote landed and handle the paperwork, so a parcel from Mumbai arrives like one from across town.

United Kingdom

  • ShippingInsured express, 3 to 5 working days to London, Birmingham or Edinburgh
  • Duty0% on loose diamonds. 2% on finished jewellery, 20% import VAT
  • HallmarkingAssay-ready pieces for a UK Assay Office mark
UK details

European Union

  • ShippingInsured express to Antwerp, Amsterdam, Paris, Milan, Munich and beyond
  • Duty0% on loose diamonds. 2.5% on finished jewellery, VAT by member state
  • ComplianceNon-Russian origin declarations and traceability evidence with every stone
EU details

Canada

  • ShippingInsured express to Toronto, Vancouver and Montreal, 4 to 6 working days
  • Duty0% on loose diamonds. MFN duty on finished jewellery, GST or HST at import
  • HoursBriefs answered overnight, calls in your morning by appointment
Canada details

United States: opening next. Jewellers in the US can write to the desk and we will say what is possible today.

Jewellery Modern solitaire design for North American and European taste

The pieces your clients ask for, made to your specification.

Clean, modern solitaire jewellery in the proportions your market expects. Stock lines for the counter, made-to-order for the client who wants it exactly so.

Image 02Solitaire ring, e-commerce, white
Round brilliant solitaireFour-claw, platinum 950, knife-edge band
Image 03Diamond studs, e-commerce, white
Diamond studsThree-claw martini, 18 kt yellow gold, 1.00 ct total
Image 04Tennis bracelet, e-commerce, white
Tennis braceletFour-claw, 18 kt white gold, 5.00 ct total
Image 05Bezel pendant, e-commerce, white
Bezel pendant0.50 ct round brilliant, 18 kt yellow gold, 45 cm chain
Collection development
Journal Notes from the desk for the counter
All journal entries

Send your first brief.

Four minutes to write. A shortlist of stones or a production quote within one working day.

Start a brief Book a call WhatsApp the desk