Verified 2026 price ranges for natural and lab-grown diamonds by carat, shape and quality.
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.
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.