Hello!I am Jessica,new to thesite.My Question is I have a ring that was said to be a pink qz in 14k setting.It changes color light pink to white to yelloew under light bulb Light pink indoors and white to clear in sunlight.IWhat Gem might it be?It has a makers mark also.It sprkles slightly but not like a cheap cz.It has a suble sparkle.Any suggestions?