Standard size: 40mm x 40mm The thickness is 0.1-0.2 micron Loose Gold Leaf : These leaves sit between two pieces of paper that cover the front and the back of the leaf. It come with 10 leaves in a pack. For an accurate application of the leaf is suggested to use a palette knife. Remind: -Always avoid to touch product with fingers -Always use the appropriate pincers for lifting and positioning the product Handle product in a draught-free environment -Breathe very lightly when close to product to avoide air-lifting it