This handcrafted gemstone necklace measures approximately 18.5 inches long. It is made of 4mm brown jasper beads and pewter spacers with a pewter filigree-backed turtle pendant. The pewter turtle pendant measures approximately 1 inch long by 0.5 inches wide. Jasper is associated with the Zodiac signs of Aries, Aquarius, Leo, and Virgo. It is the mystical birthstone for the month of October, and one of the birthstones for the month of January. Brown jasper is believed to improve concentration, increase self-confidence, and calm the nerves.