Multi-gemstone beads and sterling silver

Endless, long rope necklace with numerous gemstone beads and sterling silver ball shapes between each group of gemstone. Necklace measures 54", may be worn single, doubled, tripled. The beads are mostly the same small diameter, the necklace is very elegant. Probably 1970's. Some of the beads are green and black onyx, carnelian, quartz, lapis, tiger eye, lavender and lime colored stones. All the beads held with fine sterling silver chain and seventeen (17) sterling silver balls. Perfect condition.