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Welcome to Precious Lab — Japan's Leading Lab-Grown Diamond Jeweler

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  • LAB GROWN DIAMOND
    • Classic Diamonds
      • Round
      • Oval
      • Pear
      • Princess
      • Emerald
    • Modern Diamonds
      • Marquise
      • Asscher
      • Cushion
      • Heart
      • Radiant
    • Ready To Ship Jewelry
      • Eternity Rings
      • Anniversary Rings
      • Diamond Studs
      • Diamond Pendants
      • Tennis Bracelets
  • ENGAGEMENT RING
    • Design Your Own Ring
      • Start With Setting
      • Start With A Diamond
    • Choose By Style
      • Solitaire
      • Halo
      • Three Stone
      • Pave
      • Unique
    • Preset Engagement Rings
      • Round Cut Rings
      • Solitaire Rings
      • Pave Rings
      • Halo Rings
      • Shop All
    • Shop By Metal
      • White Gold
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      • Platinum
  • JEWELRY
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Welcome to the fine world of Lab Grown Jewelry. Browse All Our Ring Designs.

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  • Bezel Solitaire Diamond Ring With 1.45 Ct. Oval Shape Lab Grown Diamond

    Bezel Solitaire Diamond Ring With 1.45 Ct. Oval Shape Lab Grown Diamond

    Bezel Solitaire Diamond Ring With 1.45 Ct. Oval Shape Lab Grown Diamond

    Vendor:
    Precious Lab
    Regular price ¥232,512 JPY
    Sale price ¥232,512 JPY Regular price
    Unit price /  per 
  • white gold

    Bezel Solitaire Preset 1ct Diamond Ring

    Bezel Solitaire Preset 1ct Diamond Ring

    Vendor:
    Precious Lab
    Regular price ¥185,000 JPY
    Sale price ¥185,000 JPY Regular price
    Unit price /  per 
  • white gold

    Carina Emerald Solitaire Preset 1ct Diamond Ring

    Carina Emerald Solitaire Preset 1ct Diamond Ring

    Vendor:
    Precious Lab
    Regular price ¥175,000 JPY
    Sale price ¥175,000 JPY Regular price
    Unit price /  per 
  • white gold

    Carina Round Solitaire Preset 1ct Diamond Ring

    Carina Round Solitaire Preset 1ct Diamond Ring

    Vendor:
    Precious Lab
    Regular price ¥175,000 JPY
    Sale price ¥175,000 JPY Regular price
    Unit price /  per 
  • white gold

    Carina Solitaire Diamond Ring

    Carina Solitaire Diamond Ring

    Vendor:
    Precious Lab
    Regular price ¥117,000 JPY
    Sale price ¥117,000 JPY Regular price
    Unit price /  per 
  • Carina Solitaire Diamond Ring With 0.57 Ct. Oval Shape Lab Grown Diamond - Precious Lab

    Carina Solitaire Diamond Ring With 0.57 Ct. Oval Shape Lab Grown Diamond

    Carina Solitaire Diamond Ring With 0.57 Ct. Oval Shape Lab Grown Diamond

    Vendor:
    Precious Lab
    Regular price ¥178,367 JPY
    Sale price ¥178,367 JPY Regular price
    Unit price /  per 
  • Carina Solitaire Diamond Ring With 0.57 Ct. Oval Shape Lab Grown Diamond (Certificate No: 607313733) - Precious Lab

    Carina Solitaire Diamond Ring With 0.57 Ct. Oval Shape Lab Grown Diamond (Certificate No: 607313733)

    Carina Solitaire Diamond Ring With 0.57 Ct. Oval Shape Lab Grown Diamond (Certificate No: 607313733)

    Vendor:
    Precious Lab
    Regular price ¥178,355 JPY
    Sale price ¥178,355 JPY Regular price
    Unit price /  per 
  • Carina Solitaire Diamond Ring With 1.02 Ct. Round Shape Lab Grown Diamond - Precious Lab

    Carina Solitaire Diamond Ring With 1.02 Ct. Round Shape Lab Grown Diamond

    Carina Solitaire Diamond Ring With 1.02 Ct. Round Shape Lab Grown Diamond

    Vendor:
    Precious Lab
    Regular price ¥228,377 JPY
    Sale price ¥228,377 JPY Regular price
    Unit price /  per 
  • Carina Solitaire Diamond Ring With 1.05 Ct. Round Shape Lab Grown Diamond (Certificate No: 711502414) - Precious Lab

    Carina Solitaire Diamond Ring With 1.05 Ct. Round Shape Lab Grown Diamond (Certificate No: 711502414)

    Carina Solitaire Diamond Ring With 1.05 Ct. Round Shape Lab Grown Diamond (Certificate No: 711502414)

    Vendor:
    Precious Lab
    Regular price ¥187,122 JPY
    Sale price ¥187,122 JPY Regular price
    Unit price /  per 
  • Carina Solitaire Diamond Ring With 1.1 Ct. Round Shape Lab Grown Diamond - Precious Lab

    Carina Solitaire Diamond Ring With 1.1 Ct. Round Shape Lab Grown Diamond

    Carina Solitaire Diamond Ring With 1.1 Ct. Round Shape Lab Grown Diamond

    Vendor:
    Precious Lab
    Regular price ¥209,462 JPY
    Sale price ¥209,462 JPY Regular price
    Unit price /  per 
  • Carina Solitaire Diamond Ring With 1.41 Ct. Round Shape Lab Grown Diamond (Certificate No: 677531122) - Precious Lab

    Carina Solitaire Diamond Ring With 1.41 Ct. Round Shape Lab Grown Diamond (Certificate No: 677531122)

    Carina Solitaire Diamond Ring With 1.41 Ct. Round Shape Lab Grown Diamond (Certificate No: 677531122)

    Vendor:
    Precious Lab
    Regular price ¥269,081 JPY
    Sale price ¥269,081 JPY Regular price
    Unit price /  per 
  • Carina Solitaire Diamond Ring With 2.02 Ct. Round Shape Lab Grown Diamond - Precious Lab

    Carina Solitaire Diamond Ring With 2.02 Ct. Round Shape Lab Grown Diamond

    Carina Solitaire Diamond Ring With 2.02 Ct. Round Shape Lab Grown Diamond

    Vendor:
    Precious Lab
    Regular price ¥462,614 JPY
    Sale price ¥462,614 JPY Regular price
    Unit price /  per 
  • Carina Solitaire Diamond Ring With 4.01 Ct. Round Shape Lab Grown Diamond (Certificate No: 620435835) - Precious Lab

    Carina Solitaire Diamond Ring With 4.01 Ct. Round Shape Lab Grown Diamond (Certificate No: 620435835)

    Carina Solitaire Diamond Ring With 4.01 Ct. Round Shape Lab Grown Diamond (Certificate No: 620435835)

    Vendor:
    Precious Lab
    Regular price ¥268,693 JPY
    Sale price ¥268,693 JPY Regular price
    Unit price /  per 
  • Carina Solitaire Diamond Ring With 4.03 Ct. Marquise Shape Lab Grown Diamond

    Carina Solitaire Diamond Ring With 4.03 Ct. Marquise Shape Lab Grown Diamond

    Carina Solitaire Diamond Ring With 4.03 Ct. Marquise Shape Lab Grown Diamond

    Vendor:
    Precious Lab
    Regular price ¥405,927 JPY
    Sale price ¥405,927 JPY Regular price
    Unit price /  per 
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