What is the process to design a custom ring?

We love collaborating with you to craft bespoke, heirloom, and one-of-a-kind pieces that refelct your unique vision. Whether you’re dreaming of a new design or reimagining heirloom stones into modern settings that suit your personal style, our custom process is designed to be enjoyable and stress-free. Read more about our process of working together here.

How long does it take to make a custom design?

From hand selecting your diamond, to manufacturing your ring -  the custom design process takes approximately 6 weeks.

What materials do you work with?

Quality is everything for us! We only use 9 & 18ct white, rose or yellow gold and platinum for our designs. We work with natural diamonds, semi-precious and precious gemstones. All materials used by Kolmio are ethically and responsibly sourced and great care is taken with the custom manufacturing of each piece. 

What diamonds do you use?

At Kolmio we work exclusively with natural diamonds. We mostly use IJ colour smalls for our work, although any piece can be made with GH colour diamonds. The colour of diamonds used for each piece in our collections is listed in the product's description. 

Are your diamonds and metals ethically sourced?

Yes! We rely on ethically-sourced materials, using exclusively natural diamonds sourced from our trusted network of suppliers who are participants in the Kimberley Process, ensuring the stones are conflict-free. Our metal suppliers use recycled gold and by using these materials we are making jewellery that is beautiful and environmentally responsible.

Are your diamonds certified?

Diamonds that are 0.30ct and bigger are certified by reputable laboratories in South Africa (GIA and EGL).

Can I make a ring with my own diamond?

We don't accept client-sourced stones. For sentimental reasons, we reset heirloom diamonds on a case-by-case basis.

What if I want to reset my current engagement ring or heirloom piece?

One of the things we love most about precious metals is that you can recycle it, to make a new piece that reflect your personal syle. When working with a heirloom piece, it will be inspected first, before we do any work. Generally we don't reset smalls, only from 0.10ct and up, providing that the stones are in good condition. Any old metal will be sent in for refining, in order for us to work with a pure alloy. You therefore get discounted on your metal cost. Kindly reach out to us to see what is possible.

Can I have something other than an engagement or wedding ring custom made?

Absolutely! We make all kinds of custom pieces for our clients. Get in touch to find out more about our custom work.

I am not located in South Africa. Do you ship overseas?

Yes! We ship worldwide with DHL express. If your country isn't listed, kindly send us an email to get a quote to ship to your location. You may be liable for import costs, taxes, permits and other product restrictions. These charges must be paid by the recipient.

Payments can be made through Paystack or a wire transfer. Once your order is ready, we'll ship it to your door with DHL express. It takes approximately 5-10 working days to arrive, depending on where you are.

Do you have a showroom?

We don't currently have a showroom. You can shop our pieces online or if you would like to book an appointment to view our pieces, virtually or in person in Centurion, kindly send us an email.