A 0.5 carat diamond costs $250–$2,600 in our 2026 ranges, depending on shape, origin, grading, and cut quality. See every available shape.
A 0.5 carat diamond ring typically costs $650–$1,700 with a lab-grown stone and $1,800–$3,800 with a natural stone, before upgrades.
A 0.75 carat diamond typically costs $340–$4,500, depending on shape and origin. See 2026 lab-grown and natural price ranges, plus setting costs.
A 0.75 carat diamond ring typically costs $2,900–$5,700 with a 14k solitaire setting, depending on natural or lab-grown origin.
Lab-grown diamonds are usually a poor financial investment, but they can be an excellent jewelry purchase. Here is what buyers should know in 2026.
Lab-grown diamonds can be an ethical choice, but energy use, labor standards, disclosure and certification still matter. Here is how to shop carefully in 2026.
Yes, lab-grown diamonds are real diamonds with the same carbon crystal structure as mined stones. Learn the key differences, grading terms and buying checks.
As-grown lab diamonds have no post-growth treatment; treated lab diamonds do. Learn how treatments affect color, clarity, grading reports and buying decisions.
Rare Carat ranks first for IGI-certified lab diamonds online, with the deepest inventory, in-house verification, strong advice, and a 30-day return.
Lab-grown diamond drop earrings offer more size for the money, while natural diamonds carry geological rarity. Compare price, wear, looks and value for 2026.
Lab-grown diamond prices vary more between retailers than natural prices do. We priced identical IGI-certified lab diamonds at four retailers on the same day and scored each on verification, returns and expert access.
A 1 carat round lab-grown diamond at G color, VS1 clarity and Excellent cut costs $500–$1,200 in 2026 from major online retailers. Here is the verified range by shape, what pushes a stone to either end, and where the lowest prices were.
Lab-grown diamond wedding bands (half-eternity, full eternity and pavé) ranked across the four largest US online retailers on verified price, stone verification, returns and resizing.
