prompt: What types of gems are the most expensive?
chosen: What types of gems are the most expensive?
chosen: user
chosen: The most expensive gems are usually rare, natural colored diamonds, gem-quality pink, blue, yellow and red star rubies, sapphires, and emeralds. Also extremely expensive are specimens of rare minerals like Topaz, Azurite, and Tourmaline.
chosen: assistant
rejected: What types of gems are the most expensive?
rejected: user
rejected: assistant