This is a lucky marble that is about 2 inches in size and a wonderful charm. I start by making a four leaf clover with green and white glass into murrine. I use blue and white glass as the base, with clear glass surrounding the clover and leafs. I shape the sphere with a graphite mold into a perfect form.
you can watch video of a similar marble:
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