Hello
@allieadventurer, it must be worrying to think about that. However, if you purchased your VCA piece from the store or online boutique then it should be authentic so please rest assured. On the VCA website, the YG pave diamond necklace’s setting looks like this similar to what you have.
View attachment 6186900
In comparison, this is the setting for the alternating YG guilloche and pave diamond 5 motif bracelet that you also have.
View attachment 6186901It seems that there might be some slight differences in settings on the pave alhambra pieces as I have seen some on the resale market set like yours. Perhaps, over time, VCA has changed its pave setting or perhaps because each piece is handmade by various artisans causing the piece to look slightly different. I hope this might help ease your overthinking. Enjoy your beautiful VCA pieces and have a wonderful day.