Albert Barnes Commentary Judges 8:26

"And the weight of the golden ear-rings that he requested was a thousand and seven hundred [shekels] of gold, besides the crescents, and the pendants, and the purple raiment that was on the kings of Midian, and besides the chains that were about their camels` necks." — Judges 8:26 (ASV)

If the Ishmaelite nose-rings were half a shekel in weight, then 1,700 shekels weight of gold implied that 3,400 persons wearing gold rings had been slain. The “collars” were rather “ear-drops.”