The Verneuil process is a method used to produce synthetic gemstones, particularly ruby and sapphire. Developed by French chemist Auguste Verneuil in the late 19th century, this technique involves melting powdered aluminum oxide and other materials using an oxyhydrogen flame. The molten droplets then fall onto a rotating pedestal, where they crystallize and form a boule, or large crystal. This process allows for the creation of high-quality gemstones that closely resemble natural stones. The Verneuil process is significant in the jewelry industry, as it provides a more affordable alternative to natural gemstones while maintaining similar aesthetic qualities.