The cheap one can choose Tiffany's smiling face necklace, and the classic one can choose the key series (but there are too many imitations on the market)

Then, I suggest that one of yours is Tiffany bow series, which has the feeling of bow.

Another is Atlas series, which uses Roman numeral elements and is simple and fashionable.

The specific style can be directly seen in their cyber warfare, and there are many kinds.