The famous Jonker diamond was discovered by Johannes Jacobus Jonker in 1934 at the Elandsfontein mine in South Africa. The diamond was found just 5 km away from the Cullian Diamond – the largest diamond ever mined. When the diamond was first mined in the rough it weighed a huge 726 carats and cut into 13 pieces which were each individually cut. Most of the 13 diamonds were cut into emerald cut diamonds with the largest weighing 142.90 carats and the smallest weighing 3.53 carats. The largest diamond cut from the Jonker retained the same name and was cut into an emerald-cut, D-colour diamond with 66 well proportioned faces. Later the same emerald cut diamond was re-cut to enhance its brilliance into 58 facets and now weighs 125.35 carats and is now one of the most perfectly cut diamonds and largest emerald-cut diamond in the world. Te largest Jonker diamond known as Jonker I was last sold at auction in 1977 to an anonymous buyer in Hong Kong for £1.5 million.
Whilst things will undoubtedly be different this year, that doesn’t mean you can’t enjoy life’s
most luxurious pleasures. The enchantment still flows at Steven Stone.
The Stone way has always been to provide our clients with the utmost in bespoke service, which
is why we are offering 1-on-1 virtual consultations over the lockdown period.
Whether you’d like to talk about the diamond you have had your heart set or you want to discuss
an engagement ring you have seen on our website, we’re just one click away.
It could be something as simple as booking a repair in. Or detailing how the process works when
creating precious memories. Our experts are here to help whatever the occasion.
Your safety. Our priority.
The safety of our customers has always been our number one priority.
When we were allowed to open our doors and welcome clients back, we went above and beyond when
putting COVID safety measures in place.
And now we are giving you the chance to experience the Stone lore from home. We want to ensure
that every client gets the full Steven Stone experience, which is why our virtual consultations
are as close to a showroom experience as possible. Uncompromising, unrivalled service.
We know you may be wondering about the level of service a video consultation can deliver. It’s
only natural. But we’re here to assure you that our jewellers are trained to give the most
authentic experience to all of our clients. They are there to put you at ease and to make you
feel comfortable talking about any aspect of your jewellery desires - no matter the setting.
They will be at our showroom, able to take you round wherever you want to go. Once you begin
your video consultation, you will forget that you’re in your own home having immersed yourself
in the magic of diamonds. Our consultations are a special process and absolutely no expense has
been spared in bringing this enchantment directly to your home.
Whether you want to treat yourself to the diamond you’ve always wanted or you’re after something
sentimental for your partner, our relaxed video consultations can match you to the perfect
It may be a completely handmade, bespoke commission or it may be a ready-to-wear ring. Whatever
it is, our consultations will ensure it is perfect down to the very last detail.
Or it may be as simple as a repair. You might just want to breathe new life into an old
heirloom. We can help you with that too. We pride ourselves on being authentic jewellers, not
resellers. If you need any jewellery assistance during lockdown, Steven Stone are always on hand
A Steven Stone Promise
We are committed to delivering an authentic experience, enveloping you in marvellous escapism.
Whether that be in our trademark showrooms or from the comfort of your own home.
It is a commitment that we take on with the utmost respect and is what sets Steven Stone apart
from the crowd.