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1 Carat SI1 Clarity Lab Grown Diamonds

Discover thousands of certified 1ct SI1 clarity lab-grown diamonds in our online catalog and find your perfect match.

Looking to buy a 1 Carat SI1 Clarity Lab Grown Diamond? Explore our selection below or schedule a visit to our New York or Los Angeles showrooms.

  • Round Round

  • Princess Princess

  • Cushion Cushion

  • Emerald Emerald

  • Pear Pear

  • Oval Oval

  • Marquise Marquise

  • Radiant Radiant

  • Asscher Asscher

  • Heart Heart

  • European Cut European Cut

  • Old Miner Old Miner

  • Rose Rose

  • Briolette Briolette

  • Bullets Bullets

  • Calf Calf

  • Flanders Flanders

  • Half Moon Half Moon

  • Hexagonal Hexagonal

  • Kite Kite

  • Lozenge Lozenge

  • Octagonal Octagonal

  • Pentagonal Pentagonal

  • Shield Shield

  • Square Square

  • Star Star

  • Tapered Baguette Tapered Baguette

  • Baguette Baguette

  • Tapered Bullet Tapered Bullet

  • Trapezoid Trapezoid

  • Triangular Triangular

  • Trilliant Trilliant

  • Other

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1 Carat SI1 Clarity Lab-Grown Diamond

A 1 carat SI1 clarity lab-grown diamond offers incredible sparkle with inclusions that are typically invisible to the naked eye. It’s an excellent option for buyers who want maximum brilliance and value, making it a popular choice for engagement rings and fine jewelry.

What Is a Lab-Grown Diamond?

Lab-grown diamonds are authentic diamonds manufactured using advanced HPHT or CVD technology. They are identical to mined diamonds in chemical structure, physical makeup, and light performance.

Choosing lab-grown allows you to enjoy the same beauty and durability while saving up to 50% compared with mined diamonds.

Every diamond from Reve Diamonds is independently certified—most commonly by IGI or GIA—to ensure precise grading accuracy.

If you need assistance selecting your 1 Carat SI1 Clarity Lab-Grown Diamond, get in touch with our experts:

New York: +1 (646) 898 2098

Los Angeles: +1 (310) 920 6656

Or chat with us live!

Frequently Asked Questions

-What does SI1 clarity mean in a 1 carat lab-grown diamond?

SI1 (Slightly Included) clarity diamonds have small inclusions visible under magnification, but typically remain unnoticeable to the unaided eye, providing excellent beauty at a smart price.

-How much does a 1 carat SI1 clarity lab-grown diamond cost?

Most 1ct SI1 clarity lab-grown diamonds range from $900 to $3,500 depending on cut quality, color grade, fluorescence, and certification.

-Are lab-grown diamonds durable enough for engagement rings?

Yes — lab-grown diamonds are just as strong and scratch-resistant as mined diamonds, rated 10 on the Mohs hardness scale.

-Can inclusions be seen in a SI1 clarity diamond?

In most SI1 diamonds, inclusions are subtle and difficult to detect without magnification. Selecting a well-graded stone ensures an eye-clean appearance.

-What size is a 1 carat SI1 lab-grown diamond?

A well-cut 1ct round diamond measures around 6.4 mm in diameter. Size varies slightly based on cut proportions, not clarity grade.