Shop By Diamond

Direct Diamonds, Endless Choices

Welcome to Japan’s most trusted destination for lab grown diamonds—where innovation meets elegance. At Precious-Lab, we connect you directly with certified manufacturers, giving you access to Japan’s largest inventory of lab grown diamonds.

Every diamond is a reflection of cutting-edge technology and conscious craftsmanship—brilliant, sustainable, and ethically made.

Redefine how you shine. Explore a new era of diamonds with confidence and care.

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Solitaire
Solitaire
Pave
Pave
Unique
Unique
Halo
Halo
Three Stone
Three Stone

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the modern diamond

You Dream. We Create.

Our online marketplace is designed to help you discover the finest lab grown diamonds in Japan, curated from top-tier manufacturers and trusted suppliers.

Whether you're designing a custom ring or searching for the perfect gem, we make it easy to shop sustainably—with transparency, trust, and exceptional craftsmanship at the heart of everything we offer.

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the modern diamond

The Future Is Now.

Choosing a lab-grown diamond can be a more ethical, cost-effective, and environmentally friendly option without compromising on quality or appearance. It's a modern choice that aligns with sustainable practices and offers excellent value for money.

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 FAQs

Are Lab Grown Diamonds Real Diamonds?

✅ Yes! Lab-grown diamonds are chemically and physically identical to mined diamonds - same carbon structure! 💎 Just created differently.✨🔬

How Much Cheaper Are Lab Grown Diamonds?

✅ Lab-grown diamonds typically cost 40-50% less than mined diamonds with offering the same brilliance! 💎💰 Major savings! ✨🔬

Do Lab Grown Diamonds Come With Certification?

 ✅ Yes, lab-grown diamonds typically come with certification from reputable gemological labs such as IGI and GIA! 💎📜 Same grading standards as mined diamonds. ✅🔍

  • 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.