What is the downside to lab-grown diamonds?
Quick answer
The main downside is resale. Lab diamond prices keep dropping as production technology improves, so resale value is low. The other one is perception: a small number of buyers still see lab diamonds as a lesser pick, although that view is shrinking. If the ring is to be worn rather than sold, neither downside matters much in practice.
The wholesale-to-retail gap
The wholesale market has fallen much faster than retail. 1ct wholesale prices dropped roughly 96% between 2018 and 2025. In Q2 2025, wholesale 1ct lab-grown sat near $191 per carat while major retailers were charging consumers $800 to $1,200 for the equivalent stone. That gap is part of why resale is so weak: secondhand buyers can compare your stone against fresh inventory and the retail price has further to fall before it meets the new wholesale floor.
How perception is shifting
In 2020, lab-grown was a small share of engagement rings and was sometimes seen as a compromise. By 2026 it is the majority of US engagement ring purchases (61% per The Knot's study) and the picture has flipped. The remaining hesitation tends to come from older family members or heirloom-focused buyers. For most couples buying today, the social perception is no longer a meaningful obstacle.
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