After Gen steals the necklace from the old man, you see her holding it in her hand. In the next shot though the old man is still clearly wearing the necklace but in the following shot it's gone and Gem is holding again.
After Gen runs outside to greet Wes, the image is reversed. You can tell, as the name on Gen's shirt is reversed and the logo on Malik's shirt is reversed. This appears to have been intentional, to maintain the continuity of the vehicle being on the right and the house on the left.