Uniqueness Guaranteed: Every item is one-of-a-kind, making them ideal for all projects or designs. Avg Size Range: (20 to 40mm) Sizes Vary Material Origin: (India) While commonly described as a jasper, Mookaite is primarily an organic stone. Initial radiolarite deposits, which are stones made from layers of microscopic ancient marine life, incorporated silica from local sand and other ancient creatures, resulting in mookaite's distinctive color bands. Mookaite is named for Mooka Station in Western Australia, where it was first discovered. Custom Requests: Have specific preferences? Leave a message with your order, and we'll do our best to accommodate your requests if possible. Handmade items vary in size, shape, and color when selected randomly (the highest quality items are chosen first). They'll be as beautiful as those in the photos.