Natural color change Alexandrite(.12ct, Type2 SI,Ceylon) hand set in a lovely 925 sterling silver heart ring. More rare then diamonds(diamonds are actually very common & plentiful), considered by most to be of the 10 rarest gemstones on the planet, natural Alexandrite has the ability to change colors depending on the light source. Green in sunlight, purple in incandescent. Size 6 can be resized up or down 1 size