Description

About JM&Co Jewellery

At JM&Co Jewellery, we are a London-based brand creating elegant, sustainable jewellery designed for the modern, conscious woman. Our pieces feature affordable lab-grown jewellery, specifically diamonds, that combine timeless beauty with ethical craftsmanship.

With over 15 years of experience in the fine jewellery industry, Marina has worked in Rome, Milan, and London, gaining global expertise and showcasing our work at the renowned Baselworld jewellery shows, now part of Watches & Wonders Geneva. Julia brings her background in economics together with a passion for art, fashion and ethical business. We founded JM&Co during a time when the world slowed down, and values shifted toward mindful, sustainable living. Together, we launched JM&Co with a mission: to redefine luxury jewellery by making it sustainable, accessible and modern.

Our Values

At JM&Co Jewellery, we believe in luxury with purpose. Our designs are crafted using lab-created diamonds that offer the same brilliance, fire and durability as natural diamonds, without the environmental or ethical concerns. Every piece is set in high-quality sterling silver or solid 14k gold, ensuring both beauty and longevity.

Our jewellery collections range from minimalist necklaces to statement rings, classic diamond earrings and ethical engagement rings. Each design reflects our commitment to creating fine jewellery that is not only stunning but also sustainable and affordable.

Why Choose JM&Co Jewellery?

  • Sustainable luxury – We use eco-friendly, lab-grown diamonds.
  • Ethical craftsmanship – No compromise on beauty or values.
  • Affordable fine jewellery – High-quality designs made accessible.
  • Timeless style – From everyday wear to once-in-a-lifetime pieces.

Shop with Us

With our online jewellery store and worldwide shipping, shopping for ethical luxury jewellery has never been easier. We are proud to be part of a movement that is transforming how women shop for fine jewellery, choosing sustainability, transparency and timeless design.

At JM&Co Jewellery, every piece embodies beauty, integrity and contemporary craftsmanship. Explore our collections today to experience ethical luxury at its finest, and contact us to find the perfect piece or to discuss custom designs.

Want more customers to find your jewellery business? Register today and create your profile on Only Nice People, the directory where only verified nice businesses are featured.

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Open hours today: By appointment only Toggle weekly schedule
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  • Sunday

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  • 23 January 2026 6:08 pm local time

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Bruno Verified Review
  • I recently purchased a pair of diamond earrings from JM&Co Jewellery and they are absolutely gorgeous. The diamonds catch the light beautifully and the earrings feel both elegant and durable, perfect for my active lifestyle. Knowing they’re lab-created made the decision even easier. I love that I can wear them while supporting ethical and sustainable practices. I even wore them every day on holiday, including swimming in the sea, and they stayed intact throughout. The packaging was lovely and delivery was fast and smooth. I’ve worn them almost every day since they arrived and already have my eye on a few other pieces. I’ll definitely be back for more!
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