Joanna B offers the discerning individual a new standard in fine jewelry—brilliant lab-grown diamonds, thoughtfully created with integrity. Every piece embodies clarity, elegance, and a commitment to sustainability that rises above convention. This is modern luxury, elevated and intentional.
We craft premium lab-grown diamonds through meticulous methods, offering you a refined choice that reflects both your principles and your personal style.
Our advanced process brings forth diamonds that are true born—crafted with precision, and radiating exceptional clarity and light.
Choosing Joanna B means embracing a future rooted in responsibility and refinement. Each piece is thoughtfully designed and crafted using lab-grown diamonds that meet strict third-party certifications for ethics, quality, and sustainability—so you can wear your values with confidence and elegance.
Where conscious creation meets timeless beauty.
We partner with independent certification bodies to ensure every diamond not only meets the highest gemological criteria, but also upholds deep commitments to environmental care and ethical transparency.
Our laboratories, cutting studios, and design ateliers are regularly reviewed by trusted organizations such as SCS Global Services and the Responsible Jewellery Council. These audits cover everything from climate impact and clean lab practices to labor ethics, product traceability, and responsible sourcing.
A Joanna B diamond isn’t just a beautiful choice—it’s a meaningful one. It's a reflection of your values and a step toward a more sustainable, responsible future in fine jewelry.
Certified by the world’s most respected gemological institutions.
