HOURGLASS$ 339.00 - $ 659.00Black7354/043/800Add to cartAddDescriptionClear borosilicate glass hourglass with black sand.Available in several sizes.-4.9" high hourglass: 15 min. duration-6.3" high hourglass: 30 min. duration-7.1" high hourglass: 60 min. durationComposition, care & originShipping, Exchanges and ReturnsComposition: 55% sand, 45% borosilicate