We understand the worry about buying custom rings online. There are 40+ sizes to choose from and it is a stressful task. We always recommend going to visit at least 2 local reputable jewelers to get your finger sized. Always make sure to try rings of the same width and fit of the ring you intend to buy, as these are factors that influence your ring size. 

We make the process of selecting the correct size bulletproof by sending you a set of aluminum sample rings we make ourselves. Choose the size you believe fits you best and we will send you 5 rings that all vary ¼ size from each other and include the size you selected as well. You will also be able to select the width between 3,5 and 7mm.

By using this service you are able to try on these rings for a few days to really get a feel of which size fits best all day long especially in the morning when you wake up as fingers tend to get swollen at that time of the day. This is stress free service as we will provide you with a prepaid shipping label that you can use to send the set of rings back to us.

There are two categories of rings you can buy from us: Custom rings and Elite rings.


Custom rings can be sent back and resized or exchanged for only £50. In most cases we actually have to make a new ring for you so this can take 4-5 weeks to complete. However if you need the ring sooner let us know so we can prioritize it. To request a resize or exchange, you need to contact us within 14 days of receiving the ring and you will need to send it back in new condition.

Elite rings are high-end designs that contain precious material such as gold or dinosaur bone. These rings cannot be resized but don’t worry because included with your purchase there will be a set of our Premium Sample Ring Sizers. They are available in different widths; 3mm, 5mm and 7mm and in the most common sizes. We also include a free shipping label to send the set back to us so it’s a stress-free process.

Every ring that contains sensitive material such as the wood, deer antler and mineral is coated with a resin which is not only water proof but also chemical resistant which is very important if you intend to wear 24/7.

Yes we do, we also can ship using couriers which will be faster but are more expensive. Contact us to get a quote for the courier option.

Each ring is hand made and made to order. This means that when you place an order we make the ring following your specifications from scratch. For custom rings this takes 4-5 weeks and the elite ring takes usually 5-6 weeks. We do offer a Rush Order option that you can find in our services section. If purchased we will prioritize your ring and get it shipped out usually 1-2 weeks. Contact us prior to let us know when you need the ring and which design you want so we can let you know how soon we can get it delivered.

Each ring is made to orders therefore returns are subject to a 40% fee. The ring will need to be returned in new condition within 14 days.

Our rings are made to last and we offer a lifetime warranty that covers any manufacturing flaws. Therefore if there is any problem with your ring, you can send it back to us and we will repair it free of charge. This doesn't include damage caused by abuse and misuse of the ring.

Yes, but please contact us before to make sure we have the material available for these sizes.

Carbon fiber is extremely lightweight but strong at the same time. You can easily forget that you are wearing a ring after a few hours. If you are looking for a heavier ring we would recommend steel or any precious metals like gold.

Yes, most of the dinosaur bone that we get comes from the UK in a place called Isle of Weight. We have a good relation with a supplier that lives there and has been sending us awesome pieces for a long time.

If you follow use on Instagram @sestosynergy we usually post some behind the scenes in the story section.

Yes. If you have a piece of wood or stone that has a sentimental value to it and would like to integrate it into one of our ring designs we can do that for you, just contact us through the custom request page.

Yes! Check it out here