General Electric (GE) begins research into diamond synthesis, initiating the “Project Superpressure.”

GE successfully produces small industrial-grade synthetic diamonds using high-pressure, high-temperature (HPHT) methods.

DeBeers starts researching synthetic diamond production for industrial applications.

Gemesis Corporation (now Pure Grown Diamonds) is founded, focusing on producing gem-quality synthetic diamonds using HPHT.

Apollo Diamond (later acquired by Scio Diamond) develops chemical vapor deposition (CVD) method for creating gem-quality diamonds.

Technological advancements lead to improved quality and increased production of lab-grown diamonds.

The Federal Trade Commission (FTC) changes its definition of “diamond” to include lab-grown stones, removing the word “natural” from the description.

Lab-grown diamonds gain wider acceptance in the jewellery market, with improved quality and lower prices compared to natural diamonds.