4” Trailing Ruby necklace The Ruby necklace has a huge number of nicknames and has become a must have for plant growers. #depopsweepstakes # People often refer to it as ‘the jewel among plants’, and that’s exactly what you’ll think when you see one! There are many reasons the ruby necklace succulent has become so popular: it’s undoubtedly beautiful, smells fantastic, has a long flowering period, and is a low-maintenance plant (which is the best part for me).