This is such a fun class, and so affordable! All classes are $45, and include all of your supplies and tools. During a course, you will watch a demonstration, and then you will have the opportunity to create a beautiful glass marble of your own. Class sizes are small - only 4 students maximum, with a minimum of 2 students. Minimum age is 13 (anyone under 18 needs to be accompanied by an adult). Each class is 2 hours long.