A high school student has been wreaking havoc among his teachers with a $16 gadget that can supposedly tell whether a diamond is real. The TikTok star on the rise, known as DiamondTesterKid, uploaded ...

Just in time for Valentine’s Day, TODAY national investigative reporter Jeff Rossen reveals a new way to save big money on jewelry: a gemstone called moissanite. It costs a small fraction of what a ...