Hi, marie anne.
Yes, unfortunately, those are fakes and likely Chinese.
A few points/giveaways that confirm:
Not an underlined N in a circle; collar base too thick/heavy; the poor, one-dimensional quality of the iridescence combined with the exceptional 'shine' of the glass around the edges; and small differences in their pattern as compared to the original.
Plus I am betting that the overall glass thickness and weight are not right for a period piece.
Best regards