Products – Precious Lab

Japan's Leading Lab-Grown Diamond Jeweler

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0.3 Ct. Blue Color VS2 Clarity Emerald Shape

Regular price ¥51,119 JPY

Sale price ¥51,119 JPY Regular price
Unit price per
0.3 Ct. D Color FL Clarity Round Shape Lab Grown Diamond

Regular price ¥85,355 JPY

Sale price ¥85,355 JPY Regular price
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0.3 Ct. D Color VS2 Clarity Round Shape Lab Grown Diamond

Regular price ¥32,983 JPY

Sale price ¥32,983 JPY Regular price
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0.3 Ct. E Color SI1 Clarity Round Shape Lab Grown Diamond

Regular price ¥32,825 JPY

Sale price ¥32,825 JPY Regular price
Unit price per
0.3 Ct. E Color VS2 Clarity Round Shape Lab Grown Diamond

Regular price ¥33,738 JPY

Sale price ¥33,738 JPY Regular price
Unit price per
0.3 Ct. F Color VS2 Clarity Oval Shape Lab Grown Diamond

Regular price ¥35,913 JPY

Sale price ¥35,913 JPY Regular price
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0.3 Ct. Yellow Color VS2 Clarity Oval Shape Lab Grown Fancy Diamond

Regular price ¥39,327 JPY

Sale price ¥39,327 JPY Regular price
Unit price per
0.31 Ct. D Color SI1 Clarity Round Shape Lab Grown Diamond

Regular price ¥32,777 JPY

Sale price ¥32,777 JPY Regular price
Unit price per
0.31 Ct. D Color VS1 Clarity Heart Shape Lab Grown Diamond

Regular price ¥42,133 JPY

Sale price ¥42,133 JPY Regular price
Unit price per
0.31 Ct. D Color VS1 Clarity Pear Shape Lab Grown Diamond

Regular price ¥35,913 JPY

Sale price ¥35,913 JPY Regular price
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0.31 Ct. D Color VS1 Clarity Round Shape Lab Grown Diamond

Regular price ¥33,036 JPY

Sale price ¥33,036 JPY Regular price
Unit price per
0.31 Ct. D Color VS1 Clarity Round Shape Lab Grown Diamond

Regular price ¥33,221 JPY

Sale price ¥33,221 JPY Regular price
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0.31 Ct. D Color VS1 Clarity Round Shape Lab Grown Diamond

Regular price ¥30,052 JPY

Sale price ¥30,052 JPY Regular price
Unit price per
0.31 Ct. D Color VS1 Clarity Round Shape Lab Grown Diamond

Regular price ¥34,524 JPY

Sale price ¥34,524 JPY Regular price
Unit price per
0.31 Ct. D Color VS2 Clarity Oval Shape Lab Grown Diamond

Regular price ¥41,499 JPY

Sale price ¥41,499 JPY Regular price
Unit price per
0.31 Ct. D Color VS2 Clarity Oval Shape Lab Grown Diamond

Regular price ¥41,499 JPY

Sale price ¥41,499 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.