
Ethical gemstone jewelry
Exo Diamond Jewelry
Exo Diamond jewelry is made from timeless innovation. These diamonds outshine the traditional ones with unmatched colors and brilliance. Each stone is ethically crafted and sustainable, and each piece is worn to elevate every moment – because you deserve the extraordinary. Discover the new standard of elegance and find your Exo Diamond jewelry today.

minimalist and trendy jewelry
Silver Jewelry
Elegant silver jewelery in 925 sterling silver for a minimalist and trendy style that you can wear every day. Explore our featured silver rings, silver earrings and silver necklaces.

Lab diamond jewelry
Custom Gold jewelry
Create your dream jewelry in recycled gold with certified IGI/GIA diamonds - we offer personalized design and lifetime guarantee.
Exclusive Scandinavian designer jewelry
Onyx Oslo is Norway's first Exo diamond jewelry brand, founded by a passionate couple in Oslo. Our vision is to unite Scandinavian minimalism with sustainable luxury - from handmade silver jewelry to engagement rings with lab-grown diamonds. Each piece is made with ethically sourced materials and a love for the craft.
Every piece of jewelry with diamonds over 0.5 carats comes with a certificate. On the certificate you will find the diamond number, which is embossed directly on the edge of the diamond - a guarantee that you get genuine and traceable quality.
Best Selling Categories

Engagement and Wedding Rings
Celebrate your love with our Engagement & Wedding Rings collection. Featuring classic...

Silver earrings
Enjoy timeless shine with our Silver Earrings collection. Crafted from sterling silver,...
Bestsellers
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Classic 6 Claw Exo Diamond Ring
Regular price From kr4,500.00 NOKRegular priceUnit price per -
Zirconia Baguette Ring for women
Regular price kr499.00 NOKRegular priceUnit price per -
Tennis bracelet
Regular price kr999.00 NOKRegular priceUnit price per -
Exo Diamond Square Studs with Halo
Regular price From kr4,999.00 NOKRegular priceUnit price per

Silver Jewelry
Get sparkling beautiful silver jewelry from Norwegian local goldsmith. All of our silver jewelry is made from recycled materials and is gold plated. Gold plated silver provides more durability than regular silver.

Gold-plated rings
Our Norwegian designs of rings with gold-plating is inspired by beautiful fjords of Norway. We make these designs minimalist and with design principle of elegant Oslo jewelry. These gold-plated rings have higher quality and lasts longer than non designer rings.

Lab emerald Bangle
Lab emerald bracelet
One of our best selling lab-emerald bracelet in form on bangle. This Green colored emerald stone is shiny, elegant and gives you the shine and sparkle. The stone is surrounded by smaller stones which makes this an exquisite Norwegian inspired bracelet.

Diamond pendant
Exo diamond necklace
Classic Exo diamond necklace - an elegant pendant with a round cut stone (0.5 ct) in gold-plated silver. Perfect balance between timeless design and modern diamond shine.
Jewellery in Oslo – Visit Our Studio
Explore handmade gemstone pieces crafted with recycled gold and silver, right in the heart of Frogner, Oslo
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Shipping
Free shipping in Norway forever.
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Consult with us
Book timeCustomize your jewelry and unique piece with sustainable gemstones and lifetime guarantee. Be a friend and not just a customer.
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Lifetime guarantee
Explore our jewelryGet lifetime guarantee on silver and gold jewelry when you select this.
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Support Women education
Every purchase is equal to 1 month of education for women in under developed countries.
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Registered responsibility mark
Look for our responsibility mark registered with Norwegian patent office on jewelry pieces for authenticity.
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Contribute to environment
Sustainability is at the heart of our brand. Every product is carbon neutral from raw materials until it reaches you.