Mia - Round Solitaire Lab Grown Diamond Ring with Cathedral Setting and Hidden Halo

Lab-grown diamonds are real diamonds, chemically and physically identical to natural ones. At Vondel Diamonds, we exclusively use CVD (Chemical Vapor Deposition) diamonds, where a small natural diamond seed grows into a perfect diamond in a vacuum chamber under precisely controlled, optimal conditions. This accurately mimics the natural process underground, but in a fraction of the time and with a minimal ecological footprint. The result? Exceptional purity, brilliance, and full traceability from seed to piece of jewelry.

Because we eliminate all intermediaries and work directly with our exclusive producers, we save significant margins in the supply chain. Furthermore, the natural diamond sector has traditionally been dominated by a few major players (De Beers being the most prominent) who, through market concentration, have kept prices high for a long time. This dominant position doesn't exist for lab-grown diamonds: here, supply and demand truly determine the price, keeping it competitive and transparent. Moreover, the efficient cultivation process is less expensive than mining, which together leads to a price advantage of up to 90%.

At Vondel Diamonds, we work exclusively with the highest quality diamonds. Each of our diamonds is carefully selected for clarity grades VVS and VS, color D to F, and a Triple Excellent cut. Thanks to these strict quality standards, we guarantee ultimate brilliance and lifelong durability—only the very best diamonds are used in our collection.

Print the A4 template at 100% (actual size) and check the printed 10 cm ruler with a real ruler.

Cut out the ring strip or wrist strip along the indicated lines.

To find your ring size: Fold the ring band into a loop, slide it onto your finger, and tighten until it's comfortable but not tight. Read your size where the lines meet.

To determine your bracelet/bangle size: Wrap the wristband around the widest part of your wrist, tighten until it fits comfortably, and read the measurement in centimeters where the bands intersect. Add 1 cm to your measured wrist circumference for a comfortable bracelet fit.

Tip: Measure your ring at the end of the day (when your fingers are a little thicker)

If you are not sure yet, come to our store in Amsterdam to try on our rings or bracelets.

Yes. We guarantee that all our diamonds are 100% conflict-free. We work only with certified producers who adhere to strict ethical and social standards.

At Vondel Diamonds, we do more than just use sustainable materials. Our CVD lab-grown diamonds are created without large-scale mining, leaving ecosystems intact. Because they are grown locally at processing and certification centers, we save transportation kilometers. Our CVD cultivation facilities run on a mix of conventional and solar power; the factories are actively working to increase their use of renewable energy to gradually reduce CO₂ emissions. For the remaining emissions from production and shipping, we offset each order through Trees for All by planting trees, thus actively contributing to CO₂ reduction.

Each piece of jewelry comes with a certificate from an independent laboratory, providing clear information about the origin, color, clarity, cut, carat weight of your diamond(s), and the weight of the gold plating. Furthermore, all diamonds over 1 carat receive an additional IGI certificate, which independently confirms their quality.

All in-stock jewelry is shipped discreetly and insured within one business day, with track & trace. Out-of-stock and custom-made items are custom-made: production takes approximately 3-4 weeks, after which your jewelry will also be shipped with track & trace.

Yes, you can exchange or return your jewelry within 30 days of receipt (return shipping is at your own expense), provided it is unworn and in its original condition. Contact our customer service for a return label and further instructions.

Yes. Each piece comes in our luxurious jewelry box, complete with an integrated light, a soft velvet lining, and subtle logo accents. We also gift-wrap each piece in an additional gift box with a stylish ribbon, so your order is ready to give as a gift.

Clean your jewelry regularly with lukewarm water, a mild detergent, and a soft brush. Dry with a lint-free cloth. Avoid contact with harsh chemicals and store your jewelry in its jewelry box. For added convenience, we also offer a portable cleaning pen with biodegradable cleaning fluid. Simply unscrew the pen, apply the fluid to the brush, clean the jewelry, and then rinse it under the tap. You can also have your jewelry cleaned for free in our store with our ultrasonic cleaning device, so it always looks like new.

Absolutely. You can indicate at checkout whether you require custom work or engraving. Our design department will then contact you to discuss the details. Engravings are completed within 3–5 business days and shipped insured with track & trace.

Our customer service is available at info@vondeldiamonds.nl or by phone at +31 (0)20 123 4567, Monday to Friday, 10:00 AM - 5:00 PM. You can also easily schedule a virtual appointment or visit our store for a personal consultation. During this (virtual or in-person) session, we'll answer all your questions, advise you on customization, and help you choose the perfect piece of jewelry.