A woman wearing a diamond solitaire engagement ring by SJ Gems
Certified Diamonds · Crafted in South Africa

One diamond. One design. Only hers.

Choose a GIA or IGI certified diamond, select your setting, and our jewellers craft it — fully insured delivery to your door.

Design Your Ring
4.5 · Trustpilot 500+ rings crafted GIA / IGI certified
The Ring's Journey

From a certified diamond to the finished ring.

01

Select the diamond

Sourced directly and independently certified by GIA or IGI. You see exactly what you're paying for.

02

Choose the setting

Pick the style and metal, match it to your diamond, and see the finished ring before we make it.

03

Our jewellers craft it

Made to order in South Africa. Nothing off a shelf.

04

It arrives at your door

Fully insured shipping, certificate in hand, lifetime workmanship warranty.

Design Your Ring
An SJ Gems solitaire engagement ring presented in its branded box The finished ring — boxed, certified, ready.
The Trust Standard

A serious purchase. Here's how we've earned it.

01

Independent certification

Every diamond ships with its original GIA or IGI certificate. Not our grading — theirs.

02

Speak to a person first

Book a virtual consultation with us before you spend a cent. No script, no pressure, honest answers.

03

Fully insured delivery

The ring is covered until it is in your hands. Door to door, tracked the whole way.

04

Lifetime workmanship warranty

If our craftsmanship ever fails, we fix it — for as long as you own the ring.

500+ Rings crafted
4.5 on Trustpilot
“I couldn’t be happier with the final result and would recommend Joe and SJ Gems to anyone looking for a high-quality, personalised jewellery experience.”
Ross Smit — An Exceptional, Personal Experience from Start to Finish
“Joe is very helpful and prompt to reply. He even brought me the ring on the engagement day to be on time. I highly recommend.”
Christian — Reliable and fully customizable at a good price
“First of all, I would like to thank Joe for his professionalism and his willingness to bring my dream ring to life. From the beginning, I was assisted with the design and given expert advice to ensure the ring would be practical for daily use.”
John de Villiers — 5 Star Service
“Joe’s service is always amazing. He communicates very well and the stones we order from him are always good quality and delivered quickly.”
Deany Mojaki — Joe's service is always amazing
“Communication is excellent and professional advise is given to make the right choices. It was pleasant dealing with Joe and my mind was set at ease.”
Andre De Vries — Stellar experience shopping diamonds
“Joe was very helpful and made this experience seamless and amazing. He is reliable and we love the ring that was made. We even got a free resizing and Joe communicated well.”
Rufus Dickson — 10/10 Would recommend
Read all reviews on Trustpilot
A brilliant-cut loose diamond held in jeweller's tweezers
Start with the stone

Just the diamond? We do that too.

Search our certified loose stones by cut, carat, colour, and clarity. Each diamond ships with its independent GIA or IGI certificate — buy it loose, or design a setting around it whenever you are ready.

Natural Diamonds Lab-Grown Diamonds
GIA / IGI certified · Direct diamond access
The Journey Starts Here

The diamond is waiting. The design is yours.

Start with a Ring Start with a Diamond

Prefer to talk it through first? .