1. About customer service Dear buyer, If you have any questions, please feel free to contact us. And we will reply in 24 hours except weekends.if you are not satisfied with our product and service please contact us before leaving negative feedback then we will try our best to solve problems and make you satisfied. 2. About color differences and size errors Cut out,make,measurement may cause size deviation (plus and minus1-2cm fluctuation),colour aberration is due to the monitors,weather,lighting and other factors,Pictures will have different color in different monitors but this does not affect the appearence of the painting,Please understand. 3. About Diamond Supplement Service We have 20-30% extra diamonds in every pack, we have good quality control, if you found lack diamonds,The first shipment is on us.we can send you for free. Any shipment after that, you will have to pay for shipping.Contact us by message or trademanager.