'Crescents' in the Bible

Then Zebah and Zalmunna said, "Rise and fall on us; for as the man is, so is his strength." Gideon arose, and killed Zebah and Zalmunna, and took the crescents that were on their camels' necks.

The weight of the golden earrings that he requested was one thousand and seven hundred [shekels] of gold, besides the crescents, and the pendants, and the purple clothing that was on the kings of Midian, and besides the chains that were about their camels' necks.