This product is an exquisite and unique crystal hourglass made of high quality crystal and gravel. It is mainly made of high-quality transparent crystal with double hourglass of blue San red sandstone inside. This product is suitable for high-end and exquisite decorations to be placed in homes, villas, studios and other places, as well as high-end craft gift to present to relatives and friends. Warmly welcome domestic and foreign merchants to call us for trade negotiation.