4 Carat Lab-Grown Diamonds
Shop 100+ certified 4ct lab-grown diamonds. Compare measured LightScore™ evidence when available. IGI/GIA certified. Free insured shipping.
Available 4ct Diamonds
- 4.00ct F SI1 RADIANT Lab Diamond
- 4.05ct G SI1 RADIANT Lab Diamond
- 4.06ct E SI2 ROUND Lab Diamond
- 4.01ct E SI1 PEAR Lab Diamond
- 4.00ct E SI2 ROUND Lab Diamond
- 4.01ct E SI1 ROUND Lab Diamond
- 4.02ct D SI1 RADIANT Lab Diamond
- 4.03ct H SI2 EMERALD Lab Diamond
- 3.99ct G VS1 EMERALD Lab Diamond
- 3.99ct G VS1 EMERALD Lab Diamond
- 4.02ct E SI1 ROUND Lab Diamond
- 4.01ct H VS2 EMERALD Lab Diamond
- 4.02ct E SI1 ROUND Lab Diamond
- 4.04ct G VS2 RADIANT Lab Diamond
- 4.04ct F SI1 RADIANT Lab Diamond
Frequently Asked Questions
- Are 4 carat lab-grown diamonds real diamonds?
- Yes. Lab-grown diamonds are chemically and physically identical to mined diamonds. A 4-carat lab diamond has the same crystal structure, refractive index, and hardness as a mined stone of the same weight — graded by the same gemological labs using the same 4Cs standards.
- How much does a 4 carat lab-grown diamond cost?
- 4-carat lab-grown diamonds cost significantly less than mined equivalents — often 60–80% less. Exact pricing depends on color, clarity, and cut grade.
- What is a good clarity for a 4 carat diamond?
- For a 4-carat diamond, VS1 or VS2 clarity is widely considered the sweet spot — inclusions are invisible to the naked eye, and you pay considerably less than VVS or FL grades. SI1 can also be eye-clean at this size if you review the grading report carefully.
- Is 4 carat a good size?
- 4 carats is exceptional & rare. The physical diameter depends on the cut — round brilliants measure approximately 26.0mm at this carat weight.