This is a really beautiful jewelry/investment grade Natural Gold Nugget from Western Australia. The gold is very pure at 92% to 98% pure (22KT to 23KT), giving it spectacular color. It weighs 3.9 Grams (60.18 Grains) and the size is 5/8" (16 mm) long. Like all jewelry/investment grade gold nuggets, it is clean and free from any host rock or mineralization. I hand selected all my gold nuggets from the collections of multiple gold prospectors and collectors. That's why I have so many super nice high quality raw gold nugget specimens. Like all our gold nuggets, it comes with a certificate of authenticity.