Some people like to rock the new year with noise makers, late night parties and dancing. Others are more interested in rocks themselves and there will be lots of them to see this weekend at the 43rd annual Flagg Gem and Mineral Show in Mesa.

Once you’re in the cave, colors reach out of the darkness. Lush greens, violet pinpoints and swirling blues float toward you. With a swipe of changing light they seem to move: The greens recede, the purples throb, ruby reds and phosphorous oranges jump from the black like a psychedelic fever dream.