"Whether a pendant with only a stone will look beautiful or not is subjective and depends on personal taste. Some people may find the simplicity of a single stone pendant to be elegant and understated, while others may prefer more elaborate designs with additional adornments.
In terms of how it will look when worn, it may depend on the size and cut of the stone, as well as the length and style of the chain. A larger stone may be more of a statement piece, while a smaller stone may be more delicate and subtle.
To get a better idea of how a pendant with only a stone may look when worn, you could try looking at pictures of similar styles on jewelry websites (https://labrilliante.com/) or even try on similar pieces in person at a jewelry store. Ultimately, whether or not it will be beautiful is a matter of personal preference."