Products – Precious Lab

Japan's Leading Lab-Grown Diamond Jeweler

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0.3 Ct. D Color VS2 Clarity Round Shape Lab Grown Diamond

Regular price ¥42,878 JPY

Sale price ¥42,878 JPY Regular price
Unit price per
0.31 Ct. D Color VS1 Clarity Round Shape Lab Grown Diamond

Regular price ¥42,947 JPY

Sale price ¥42,947 JPY Regular price
Unit price per
0.31 Ct. D Color VS1 Clarity Round Shape Lab Grown Diamond

Regular price ¥43,187 JPY

Sale price ¥43,187 JPY Regular price
Unit price per
0.31 Ct. D Color VS1 Clarity Round Shape Lab Grown Diamond

Regular price ¥39,068 JPY

Sale price ¥39,068 JPY Regular price
Unit price per
0.31 Ct. D Color VS2 Clarity Oval Shape Lab Grown Diamond

Regular price ¥54,009 JPY

Sale price ¥54,009 JPY Regular price
Unit price per
0.31 Ct. D Color VS2 Clarity Oval Shape Lab Grown Diamond

Regular price ¥54,009 JPY

Sale price ¥54,009 JPY Regular price
Unit price per
0.31 Ct. D Color VS2 Clarity Round Shape Lab Grown Diamond

Regular price ¥43,817 JPY

Sale price ¥43,817 JPY Regular price
Unit price per
0.31 Ct. D Color VS2 Clarity Round Shape Lab Grown Diamond

Regular price ¥41,413 JPY

Sale price ¥41,413 JPY Regular price
Unit price per
0.31 Ct. D Color VS2 Clarity Round Shape Lab Grown Diamond

Regular price ¥41,413 JPY

Sale price ¥41,413 JPY Regular price
Unit price per
0.31 Ct. E Color VS2 Clarity Round Shape Lab Grown Diamond

Regular price ¥42,888 JPY

Sale price ¥42,888 JPY Regular price
Unit price per
0.31 Ct. E Color VS2 Clarity Round Shape Lab Grown Diamond

Regular price ¥42,888 JPY

Sale price ¥42,888 JPY Regular price
Unit price per
0.32 Ct. D Color SI1 Clarity Round Shape Lab Grown Diamond

Regular price ¥40,023 JPY

Sale price ¥40,023 JPY Regular price
Unit price per
0.32 Ct. D Color SI1 Clarity Round Shape Lab Grown Diamond

Regular price ¥44,962 JPY

Sale price ¥44,962 JPY Regular price
Unit price per
0.32 Ct. D Color SI1 Clarity Round Shape Lab Grown Diamond

Regular price ¥44,962 JPY

Sale price ¥44,962 JPY Regular price
Unit price per
0.32 Ct. D Color VS1 Clarity Round Shape Lab Grown Diamond

Regular price ¥40,314 JPY

Sale price ¥40,314 JPY Regular price
Unit price per
0.32 Ct. D Color VVS2 Clarity Emerald Shape Lab Grown Diamond

Regular price ¥45,917 JPY

Sale price ¥45,917 JPY Regular price
Unit price per

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.