Malabar Gold & Diamonds — gold ring

Hi i had brought a 22k gold stud ring for my mom from saudi arabia jeddah on 18th of september 2018. I did not notice it that much as the diamond on it ver small as of today can i removed it to show it to my mom on a call i saw that there were some diamond missing. So i vent back to the time ben i brought as i had send a pic of it to my parents an after i zoom in the pic over there also it is not to been seen. So i need it to be fix i have a bill an the pics