It’s the color-change variety of the mineral, chrysoberyl. Bluish green in daylight, purplish red under incandescent light; hard and durable.
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Mollitia iste laborum ad impedit pariatur esse optio tempora sint ullam autem deleniti nam in quos qui nemo ipsum numquam, reiciendis maiores quidem aperiam, rerum vel recusandae