Inside out, store color changing, borosilicate glass pipe

store Inside out, color changing, borosilicate glass pipe. Black and white cane and lines throughout the inside of the pipe. Gold and silver fumed for color change with color changing dots. Very thick glass with a flat spot on the bottom. Just under 4 inches long. Weighs 105 grams. Pictures were taken in the sun so the pipe is darker in color in indoor lighting.