Emeralds & Opals Crystal Rhinestone Green Velvet Dog Cat Pet Collar 5/8" Emerald Green Velvet ribbon sewn onto a sturdy Nylon Webbing Can be made into a cat safety collar. Please make request in the Gift Message Area. neck circumference, NOT collar length. Measure around neck with snugly NO Extra Room, We add to that measurement. Genuine Top Quality Crystal Glass Rhinestones, They are called "White Opal" and Emerald" colors. Made in the USA!! We have a matching leash available for purchase.