Before embarking on your Eva Gems & Jewels adventure, some things you may want to know:

Your Bespoke Journey

How do I know my correct ring size:

There are two ways to determine your ring size. One, go to a professional jeweller and get your ring size measured. Kindly provide us with the measurement in “inside diameter mm”. Alternatively, I can measure your ring size in person (available in London). If neither of these options are possible, please get in touch to discuss other options.

What if my sizes and yours are different?

In the event of a difference between your jeweler’s sizing tools and mine—which is possible, as different parts of the world may use different sizing tools —the ring will simply be resized at no cost to you.

I mostly meet customers in person or at a private Gemstone Event. In that case, I’ll measure your ring size. It’s always a good idea to bring or wear a few of your own favorite gemstone rings.

How can I get information on, and/or order loose coloured gemstones or diamonds?

As a certified gemologist, I will assist you during the selection process and will answer any questions you may have regarding loose coloured gemstones or diamonds as well. Unique gemstones come with a certificate for peace of mind.

In addition to searching for fine quality, special coloured gemstones to create your bespoke jewel, you can also purchase as ‘’loose” stones.

I don’t sell any single, loose diamonds. Diamonds are used in jewellery pieces to combine them with colour stones or at the request of the customer; these quality diamonds come from my atelier in Bangkok or London.

Can you turn my own gems or jewellery into something new?

I only use personally sourced stones for which I can ensure the quality, beauty and origin. Unfortunately, I’m unable to work with family heirlooms or old jewellery nor do I refurbish them.

That being said, I’d like to invite you to try something new. I provide a unique hand-in-hand experience that not only makes you a part of the adventure, but makes the final piece (whether for yourself or a loved one) that much more special.

It’s an adventure you will thoroughly enjoy.

Can I make my own design?

Absolutely! I will ensure your design is brought to life as well as include any small technical adjustments to make sure it is a lifelong heirloom jewel.

How long does it take to create a bespoke piece of jewellery?

I’ll need 3 hours of your time over the course of 6 to 8 weeks. The total commission time from beginning to end is about 6 to 8 weeks, depending on your chosen gemstone and the complexity of the design.

Special requests, such as covert missions that need to be hidden from your better half, can be handled and need to be assessed on an individual basis.

Who will design my jewellery?

From your initial brief & inspiration, I work directly with my small team of jewellery designers, stone setters and fine goldsmiths. Depending on where you are located and your desires, we can carry out this work in London or in my French atelier in Bangkok. I will always inform you of each step of the process. 

Can you design an engagement ring?

I do! (Pun intended). It would be my absolute pleasure to help you along in finding the perfect coloured stone and creating the ring design that tells your story.

Where do your gemstones come from?

Gathered in Bangkok (the world’s trade hub of coloured gemstones) and responsibly sourced from faraway places like Tanzania, Mozambique, Sri Lanka, Myanmar and Madagascar. I source these precious gems from family-run establishments.

When do I see my jewel?

Along our journey you will see your jewel in first sketches, and either polished technical sketches or 3D-rendering - whereby we can tweak until you think it’s perfect. And, of course, you will see it once the custom piece has been fully brought to life and delivered to your door.

Do you offer certificates for your gemstones?

Yes, but not for all stones. Depending on the type of gemstone and the size and quality of the stone, it’s not always necessary or helpful to get a certificate. It is definitely a good idea to have a certificate for more valuable stones and for stones that commonly appear with treatments or in synthetic form.

Do you offer synthetic gemstones?

No. I only source natural, fine-quality gemstones.

What if I don't live in Europe? Can you meet me in my hometown?

Not a problem! Overseas missions are possible and many of my clients are based outside of the Netherlands… and often outside of Europe.

We’ll have phone calls, Skype sessions and/or email correspondence throughout the process. I’ll show you computer-aided designs (“CAD-design”) or hand-made sketches, and the process will be as seamless as if you were sitting beside me.

If you’d like to meet in person, we can arrange that as well. My gemstone work takes me around the world. Just let me know where you’d like to meet and I’ll do my best to accommodate you. That said, I prefer to meet in the following cities: London, New York, Geneva, or Amsterdam.

My primary goal is to provide you with all the information necessary so that we can effectively work together – openly or in a covert operation, i.e., hidden from your special one.


How do I pay?

You can pay by PayPal, credit card or by way of (international) bank transfer.

Do you offer payment plans?

We offer different financing options to make investing in a bespoke jewel more affordable. Contact us for more information.


I live outside the UK, how do you ship? or Do you ship outside the UK?

I offer complimentary, insured and worldwide delivery.

What does the packaging look like?

Rings, bracelets or necklaces come in a fashionable leather pouch made from Italian, dyed lamb’s leather. You can pick the colour. The pouch is then put inside a square box and sent to you. Rings come in a separate box which protects the earrings more effectively.

Returns and Warranty Policy

Is there a return policy?

I want you to be completely happy with your order.

If a ring doesn’t fit, the ring will be resized at no cost to you.

And if for any reason you are not satisfied with your jewellery piece or loose gemstone, I will accept items for exchange or 100% refund within 15 working days from the delivery date, accompanied by a sales receipt. All returns must include the original packaging and certificates (if any) and must be in the same condition as when it was received. Please note that any item that is returned damaged, used, incomplete or soiled will not be refunded or exchanged, unless defective (see the warranty below).

Pieces made specifically to commission cannot be returned due to their individual nature and the fact that we’re in contact during the whole creation process.

For more details on how to return, contact Eva.

Do you offer a warranty for your jewellery?

​I stand behind my products and warrant that all items will be free from manufacturing defects for the life of the products. If you believe your item has a manufacturing defect, you may return it to me for inspection.

If I determine your merchandise is damaged due to a manufacturing defect, I will repair the merchandise or, if I deem appropriate, replace the item. If the item is no longer available, Eva Gems & Jewels may, in its discretion, replace with like-kind or allow a refund equal to the selling price of the original item or component.

If I determine that the damage is not caused by a manufacturing defect, then I will notify you and let you know if repair services are available at cost or otherwise.

Please note that I personally source and select each stone and they are of fine quality and mostly 'eye-clean'. Slight irregularities and variations in craftsmanship or natural characteristics, or internal inclusions, visible or otherwise, in coloured gemstones are unique and individual to each item. These characteristics are considered as part of the character of the item, and should not be considered a defect. I will inform you about the gemstones and any applicable instructions of care during the purchase process.

The warranty shall be rendered invalid for any jewellery pieces that have been worked on by unauthorized laboratories and in this case, I reserve the right not to carry out any further repairs requested.

Fine jewellery is not impervious to normal wear-and-tear, activities and trauma. This is particularly true for rings since hands are regularly subjected to considerable abuse. I do not provide warranties for damage due to normal wear, product loss, loss of stones or theft. Damage or loss that results from failure to obtain repairs necessary to maintain the integrity of the product are also not covered.

Some examples of common jewelelry issues that would not be considered manufacturing defects include:

1. Discoloration due to exposure to chemicals, make-up, swimming pools, hot tubs or bathing.
2. Prongs and precious metals, in general, wear over time and may require “building up” or restoration work as normal wear.
3. Bent, caught or worn out prongs(s) allowing a stone to fall out or be lost due to normal wear or other damage.
4. Lost stone or a stone has fallen out due to chipping or breaking caused by normal wear or other damage.

Still curious?

Eva Gems & Jewels Logo

Become  an  insider

Join those in the know who enjoy shopping direct for their high-end, personalised gemstone pieces, get unprecedented access to stones that are usually only available to the world’s high jewellery houses and be the first to hear about insider jewellery events

We collect, use, and process your data according to the terms of our privacy policy.

Back to Top