Hello Kitty Adjustable copper ring comes in 4 different types of crystals - Amethyst, Citrine, Peridot, and Topaz.  Perfect gift for a Hello Kitty lover. 
 
NATURAL & UNIQUE
Please note, no crystal is exactly the same as they are natural stones.  They may slightly vary in color, size, and shape.  They may have natural flaws in them, which is what makes each of them unique.