Concierge Prodiam replies within 24 hours, Mon–Fri. Insured overnight delivery across South Africa, and insured worldwide dispatch.

Tennis necklaces available to enquire about

Compare the listed pieces below, then ask Prodiam to confirm availability, length and the final details. Prices shown include VAT.

Images labelled “Indicative render” are AI-generated illustrations, not photographs of the individual necklaces. Request current photographs before purchase.

  • Natural diamonds only

    We sell natural diamonds and diamond-set jewellery. Ask us about the grading report and available origin documentation for your chosen stone. Why we don’t sell lab-grown →

  • Independent grading reports

    The grading laboratory is shown per stone. Review its report and the individual diamond before choosing; sourced examples can include GIA, EGL and IGI.

  • Insured delivery, SA & worldwide

    Overnight across South Africa via Brink’s, G4S or our nominated jewellery courier. Insured worldwide dispatch via Ferrari Group and FedEx Custom Critical.

  • 14-day in-person exchange

    In-person sales at the viewing room come with a 14-day exchange courtesy on stock pieces. Distance-sale CPA cooling-off applies.

Made-to-order necklace budget examples

Priced by the total carat weight of the line and the size of each stone. These are the same stones, at the same rate, as the tennis bracelets on our bench, so you can go and look at the workmanship before you commit to a necklace. H-I colour, VS-SI clarity, 18kt white, yellow or rose gold, VAT included.

Stone sizeTotal weightIndicative price
1.5mm 3 ct R88 500 Ask about this one →
1.9mm 5.7 ct R164 500 Ask about this one →
2mm 5.7 ct R164 000 Ask about this one →
2.2mm 6.2 ct R177 500 Ask about this one →
2.3mm 6.8 ct R174 500 Ask about this one →
2.3mm 6.9 ct R176 500 Ask about this one →
2.5mm 8.3 ct R201 500 Ask about this one →
2.9mm 11.8 ct R290 000 Ask about this one →
3mm 13 ct R358 000 Ask about this one →
3mm 13 ct R399 500 Ask about this one →
3mm 13.7 ct R355 000 Ask about this one →
3mm 14 ct R371 000 Ask about this one →
3.2mm 16.9 ct R407 500 Ask about this one →
3.5mm 19.6 ct R585 000 Ask about this one →
4mm 22.4 ct R596 000 Ask about this one →
3.8mm 23.2 ct R827 000 Ask about this one →
4.5mm 29.5 ct R1 019 500 Ask about this one →
4.8mm 36.9 ct R1 158 000 Ask about this one →

Indicative and VAT inclusive. Length, setting style and metal move the final figure, so the number you act on is the written quote, not this table. Derived from what we charge for the identical stones in a tennis bracelet.

Get a firm quote on WhatsApp

See the same line on the bench today

For a bespoke necklace, choose the weight and length with our workshop. These tennis bracelets offer additional examples of the same style of linked diamond construction.

See all 18 tennis bracelets in stock →

Example necklaces · rendered design references

Diamond necklace designs: examples we can make

Every piece is made to order on our Bedfordview bench. These are rendered examples of standard designs, in the metal of your choice: point at one and say that, at this weight.

These are examples, not a catalogue

We are a working bench, so we can make essentially anything: a design off this page, one of these changed, a piece you have seen elsewhere, a drawing, a photograph, or an heirloom reset into something new. Bring the idea in whatever form you have it and we will tell you what it takes and what it costs, before any work starts.

Message Prodiam on WhatsAppor send it through the contact page

Renders are illustrations of a design, not photographs of a piece in stock. The stones in the pictures are stand-ins; yours is the one you choose, certified, with its own report.

How a diamond tennis necklace is made to order

  1. 01

    Brief

    Stone size or total carat weight from the table above, colour and clarity grade, the metal, the length, your budget and your date. We reply within a working day.

  2. 02

    Match the line

    Every stone selected within one colour and one clarity grade and calibrated to one diameter, from the certified trade or from stones cut on our own bench, checked side by side under loupe. You approve the grade and weight against a firm rand quote.

  3. 03

    Make and set

    Links cast in 18k white, yellow or rose gold, or platinum; every stone set at the bench; a box clasp with a safety catch fitted; hand-polished and checked under the microscope.

  4. 04

    Hand over

    Collect in Bedfordview by appointment, or insured overnight courier anywhere in South Africa, with an insurance valuation.

The same line at wrist length is the diamond tennis bracelet, priced piece by piece; single-stone pieces are diamond pendants.

Diamond tennis necklaces: common questions

What is a diamond tennis necklace?

A diamond tennis necklace is a continuous, flexible line of individually set diamonds that runs the full circumference of the neck, with no central pendant or feature stone, just diamond after diamond, evenly matched, all the way round. It is the necklace cousin of the tennis bracelet: the same in-line, claw-set or channel-set construction, scaled up from the wrist to the neck.

Because every stone sits beside its neighbour in plain view, the look lives or dies on how well the diamonds are matched for colour, clarity and cut, which is exactly where a cutting house that polishes its own stones has the advantage. The result is a single bright line of light that suits both everyday wear and black tie.

How is a diamond tennis necklace priced in South Africa?

By the total carat weight of the line first, then by how hard that line is to match, then by length, metal and setting. A tennis necklace can carry anywhere from a few carats to well over twenty across dozens of stones, and the price scales with that total weight against the Rapaport wholesale list, converted from US dollars into rands on the day.

The part buyers underestimate is matching: sourcing thirty, fifty or a hundred diamonds that are visually identical in colour, clarity and cut is far harder, and more valuable, than buying one stone, and it is where most of the craft sits. Listed necklaces carry their own VAT-inclusive prices where available. For a bespoke necklace, the final figure depends on your exact specification; ask Darren for a firm quote.

How many carats and what length should a diamond tennis necklace be?

Length is usually 16 to 18 inches: 16 inches sits high at the base of the neck like a collar, 18 inches falls just below the collarbone and is the most-chosen everyday length.

Total carat weight is a matter of presence and budget rather than a rule, a finer line of smaller matched stones reads as elegant and wears daily, while a heavier line of larger stones makes a statement, and the price follows the total weight.

You also choose between a uniform line, where every diamond is the same size, and a graduated line, where the stones grow larger toward the centre front. We will model the look at a few different total weights so you can see the difference before committing to a figure.

Tennis necklace, tennis bracelet, or a pendant necklace, which should I choose?

A tennis necklace is the boldest of the three: a full line of diamonds around the neck, the most carats and the most light. A tennis bracelet is the same construction on the wrist, a lower entry point and an easy everyday piece that pairs naturally with a matching necklace.

A diamond pendant necklace puts a single diamond or cluster on a fine chain, the most accessible way into diamond jewellery and the most understated. If you want maximum impact and have the budget, the necklace; if you want a daily diamond at a gentler price, the bracelet or the pendant. Many clients build the set over time, often starting with the bracelet and adding the necklace later.

Are the diamonds in your tennis necklaces matched and certified?

Yes. Prodiam works in natural diamonds only, and the entire point of a tennis necklace is a line that is matched, every stone selected and, where needed, cut and polished on our own bench so the colour, clarity and cut read as one continuous piece. Significant individual stones carry independent certification, GIA primarily, and the finished necklace is supplied with full documentation and a written valuation for insurance.

You see and approve the matched line before it is set, and you buy at a Rapaport-referenced landed rand level for the exact specification, with the importer and wholesaler markup removed rather than discounted.

Last reviewed: June 2026.

The Prodiam promise

The quote is free. So is walking away.

Ask us to quote any stone or ring and you get a firm figure in writing within 24 hours, VAT inclusive, with the trade-offs explained in plain English. It costs nothing and commits you to nothing: no deposit, no account, no follow-up campaign. Worst case, you learned the honest number and bought elsewhere better informed.

We actually want you to compare. Buying well means weighing options; it is how we buy rough at the viewings, and it is how you should buy a diamond. Bring any written quote and we will price it like-for-like, and if we cannot beat it, we will tell you so bluntly. Either way you leave knowing where you stand.

One more thing worth knowing: this site shows a selection of our stock, never the full range. Far more passes across the bench than we ever list, so if the exact stone or design you want is not here, ask us for it. It is usually one message away.

Get my written quote

Prefer to talk it through first? That works too. Tell us how you like to be reached, and that is how we will reach you.