Solvertoned green stone fishhook earrings

I don't have a tester to confirm, but I believe the teardrops are actual stone, due to the pattern irregularity and hardness. Likely some kind of agate. Mostly greens and white/cream,but stone blue veining as well. Very pretty! Also has a light green/yellow round cabochon that teardrop hangs from. It does have a stamp that says SFMW or SHMW, I'm not sure and neither search came up with anything.