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Japan's Leading Lab-Grown Diamond Jeweler

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The CompleteEdit

Discover all of our jewelry in one place—rings, bracelets, pendants, and more. Crafted in Japan with certified lab-grown diamonds and fine metals, the Complete Edit is the heart of Precious Lab.

Create A Truly Bespoke Ring

Customize rings using hand-picked lab grown diamonds from Japan’s top sources. Choose your cut, setting, and metal to create a ring that’s uniquely yours.

Trusted Advice

Over 30 years of experience in Japanese jewelry craftsmanship, our jewelers provide personalized consultations on diamond selection and custom designs.

Buy With Confidence

Shop our certified selection of lab grown diamond jewelry with transparency, detailed specifications, and lifetime guarantees.

Sourced With Care

Every diamond is crafted with sustainability and ethical practices in mind—because luxury should never come at the planet’s expense.