We approximately 20 individual stones used to create this Heart pendant, the detail in craftsmanship is perfect. The reddish and light purple coloring is  spiny oyster shell, the dark blue is Lapis, the dark purple is Sugalite, the white is white buffalo turquoise, and the black is a fossilized wood called Jet. Set in solid sterling silver, the heart measures approximately 1-1/4″ in length and is 1″ wide at its widest point.