Here to do things differently

Hardtwein was created with a simple vision: to bring more transparency, quality, and accessibility to the fine jewelry industry. We believe that beautiful, lasting pieces shouldn’t come with hidden markups or rely on plated materials that wear down over time, which is why we are committed to honest sourcing, fair pricing, and only using solid gold, moissanite, and lab-grown diamonds. Our mission is to challenge outdated traditions and empower customers with high-quality, ethical jewelry designed to be worn for a lifetime and beyond.

Inspired by love, driven by change

In the summer of 2021, Mirjam was proposed to with a stunning moissanite engagement ring—one she still treasures today. Having expressed her desire for a more affordable ring with a larger stone, she was disappointed by the lack of options in the traditional jewelry market. All she found were highly marked-up diamond rings, which led her to take a different approach. This is how Hardtwein was born, with a focus on:

• Premium materials: Never plated, always solid gold
• Lab-grown only: We exclusively use ethical lab-grown diamonds and moissanites
• Easy customization: Choose between 14K or 18K gold and lab-grown diamonds or moissanites
• Local production: All our rings are locally made in the Netherlands or Belgium
• Fair pricing: Reasonable markups without unnecessary luxury premiums
• Education-first approach: Empowering customers to make informed decisions by providing comprehensive background information

Still Have Questions?

If you have any questions, concerns, or suggestions, please don’t hesitate to reach out via info@hardtwein.com.