Choose to wear many necklaces with the same semi-precious stones and different  and lengths  with or without pendants and wear them layered  with a boho-vibe..

long casual elegant necklaces with grey diamonds and peach moonstone showing a strong boho vibe

...or choose an edgy contrast from grey Sterling Silver and grey Freshwaterpearls.

long layered casual elegant pearl and diamond necklace showing edgy but elegant contrasts from grey Sterling and freshwaterpearl