Inky Cap Mugs, Cups, and WineglassesBlown from a charcoal colored glass that glows in a UV light. Cup features an inkycap, shaggy main mushroom handle hand sculpted from borosilicate glass. Incredible adorable glass tea cups to add to your cottage core garden parties. Each cup is made individually and the handle is hand sculpted making each one is unique. Sizes and colors will vary. Tea cups are made from borosilicate glass which helps insulate your drinks in hot or cold and is