every time you use the mine you have a chance to extract diamonds in addition to ore here is a rough idea of the percentage chance you have to obtain diamonds based on the extraction tool that you usethese mystery boxes are sometimes free to open and they can contain coins building materials and even free diamonds other mystery boxes are locked and you need to pay diamonds to unlock them since mystery boxes are more likely to contain building materials or coins than diamonds it isn t a good idea to unlock them unless you already have more diamonds than you know what to do withfrom time to time you will notice movie tickets appear next to your farm s mailbox clicking on one of these movie tickets launches a feature called night at the movies this allows you to watch short advertisements usually for other mobile games in exchange for rewardsfrom time to time you will notice movie tickets appear next to your farm s mailbox clicking on one of these movie tickets launches a feature called night at the movies this allows you to watch short advertisements usually for other mobile games in exchange for rewardsevery time you use the mine you have a chance to extract diamonds in addition to ore here is a rough idea of the percentage chance you have to obtain diamonds based on the extraction tool that you usethese mystery boxes are sometimes free to open and they can contain coins building materials and even free diamonds other mystery boxes are locked and you need to pay diamonds to unlock them since mystery boxes are more likely to contain building materials or coins than diamonds it isn t a good idea to unlock them unless you already have more diamonds than you know what to do withfrom time to time you will notice movie tickets appear next to your farm s mailbox clicking on one of these movie tickets launches a feature called night at the movies this allows you to watch short advertisements usually for other mobile games in exchange for rewardsfrom time to time you will notice movie tickets appear next to your farm s mailbox clicking on one of these movie tickets launches a feature called night at the movies this allows you to watch short advertisements usually for other mobile games in exchange for rewards