The product arrived on time as expected. After I opened the box I noticed one of the natural ridge on the Gua Sha piece is deeper and may break off after some use. I emailed the seller with the pictures and requested a replacement. Within two hours I received a message from the seller, the agent apologized and informed me that a replacement order has been generated and I will receive it the next day... The next day I received the replacement.Wow, what a professional customer service! Very impressed!About the product: It's beautifully packaged in a excellent quality box. The roller is beautifully constructed - the rose gold metal and the pink quartz stone looks lovely, it rolls smoothly on my skin. The Gua Sha piece is of the same great quality. They look so beautiful and feel great on my skin!! I am really looking forward to use them.Definitely will be buying this seller as gifts for my girlfriends' birthdays.