Lucky Brand Silver Tone Organic Stone Pendent Necklace

I’m into genuine stones so usually name brand costume jewelry doesn’t impress me. But, there is something about this necklace that I just can’t explain. I’m not sure the composition of the organic stone but it’s very etherial looking. Does not look cheap. This is retailing for $49 on the Lucky Brand website. I don’t see any flaws here but please look at pics closely.