hourglass pendant 3D print model

whole height of the pendant is 21 mm.there is two plates upside and downside the pendant which its diameter is 12 mm and the thickness is 1 mm.the diameter of the connecting ring is 4 mm.there is two teardrop stones which their height is 8mm and their largest diameter is 6mm.there is two connecting nails upside and downside each stone which its diameter is 1 mm and the height is about 3 mm.the weight is 8.2 gr 18KY.connecting ring and nails are not union with the hourglass and the size of each is changable.