For Watchmakers and Hobbyists: The special price of $10 per crystal (including shipping) is available to watchmakers or hobbyists who are able to research and determine the correct SUC crystal number. This requires that you have access to an SUC crystal catalog. To obtain this price, you must order by specific SUC crystal number... not by crystal dimensions or description. We guarantee you will receive the crystal you order, but there are no returns if you order the wrong crystal. If we do not have your crystal in stock, we will notify you and your credit card will not be charged.