jade , that 's the greeny blue one , well , the chinese thought jade was the most pure and divine of all natural materials and could stimulate the flow of milk in nursing mothers , and , in the zodiac , the jacinth , that 's the orange one , well , that 's the stone for libra , and the jasper , that 's the yellow one , and there 's some brown and red ones here , well , that 's the stone for pisceans . ''