This whimsical marble is about 2.5 inches in size. I created a variety of murrine to represent barnacles that grow in the ocean. The murrine barnacles rest on a base of pink and white glass and clear glass is shaped to create a perfect form using a graphite mold.
You can watch a video of a similar marble being made:
https://www.google.com/search?q=youtube+john+gibbons+marble&ie=UTF-8&oe=UTF-8&hl=en-us&client=safari#fpstate=ive&vld=cid:36f8bff0,vid:I8fcyZnDzRw,st:0