Our sizing system is like this: Size 12 fits necks from 8"-10", size 14 fits necks 10"-12", size 16 fits necks 12"-14", 18 fits neck sizes 14"-16". It is best to measure your pet's neck and add two inches to come to the right size.
The Zebra collar features black diamond colored stones, and the leopard, tiger and jaguar collars have honey topaz crystals