Zodiac Bead Bracelet with Black Lava and Agate Stones Wear this natural stone stretch bracelet with any style or give it as a gift. The stretch bracelet has Lava stones paired with a Zodiac charm and colored Agate stones. The bracelet has a width of 8mm. The wearable length of the stretch bracelet is 8 inches and the inner circumference is 6.75 inches.