I don't see any but I've had plenty of earrings that didn't. I've owned gold earrings before that weren't marked and I've owned earrings that were. I believe these are but I cannot and will not promise it.
Okay... there's some mark on them, but like the other pair, I can't confirm what if anything it actually says. It's a small print and my eyes are pretty good but not good enough for that. All the information I can confirm about these earrings is listed.