1 inch 25.4 mm. 1 pound 453.6 grams.
Weight and size of stone may still vary slightly from piece to piece due to difference in calibration of weighing and measuring scales. Each item for sale is individually measured because crystal is unique.For a personal aid, check the provided measurements against a similar item at your side such as coins , books and so on. If you have other question you could contact me soon. This item is made of natural rainbow crystal and crystal ball.