This Australia gold nugget is very unique and is shaped like a Giraffe Head. It is rare to find gold nuggets that are in such distinct shapes. I have had to look through many thousands of gold nuggets to get the ones you see in this collection of special shape gold nuggets. It is 7/16" (11 mm) long and the weight is 12.9 Grains (0.84 Gram). It is a high quality jewelry grade gold nugget, the highest grade you can buy. Australian gold nuggets are known as some of the purest gold nuggets in the world at 92% to 98% pure (22 KT to 23 KT) It comes with a certificate of authenticity.