Chameleon diamonds are the rarest and most sought after of the Fancy colored diamonds, and they are the only natural colored diamonds that are able to change color. This stunning round brilliant-cut jewel weighs an incredible 4.03 carats and displays a certified Fancy Grayish Green color when viewed in normal conditions. When this diamond is gently heated to approximately 250 degrees or left in the dark for approximately 24 hours, the stone temporarily transforms and radiates with a stunning golden yellow hue. Chameleon diamonds are only known to exist in the Fancy color range, within the dominant color families of green, yellow, gray and brown.