Crystal Sandglass Beautiful style, various colors and shapes. The acrylic sandglass is suitable for promotion, gift,stationary or advertising.3D image or model can be engraved in the block.The acrylic sandglass is suitable for promotion, gift, stationary or advertising.3D image or model can be engraved in the cubEach side of the image can be seen clearly. Your image can be lasered cut in the cube ...