This necklace has such beautiful semi-precious gemstones, including moss agate and a variety of jaspers. Each of the larger stones measure about 1-1/4 inches x 5/8 inch and are 1/4 inch thick. The pendant is 1-5/8 inch x 1-1/4 inches. Each of the large stones has three small stone bead spacers between them, and the pendant is suspended with a chain of small round stones. The necklace is 18 inches long with a lobster clasp. Really an outstanding, lovely necklace, in excellent condition. (The white spots are just camera flash.)