Click to expand Tap to zoom Heebie Jeebies | Foucault's Pendulum | Spare Sand by Heebie Jeebies Save Liquid error (product-badge line 32): -Infinity% $4.50 | / 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This is a bag of 400grams of fine sand for use with our range of Foucault's Pendulums. Made from finely milled glass.