Gorgeous Deep Purple Cobalt Blue Color- Crackle Glass Effect Vase. The crackle effect is only on the outside, the inside is smooth. 6" x 3". The pictures do not do justice to this beautiful mouth blown art glass vase by Thorn Glass Studio, Ontario. It has a rough concave pontil scar on the bottom and is signed. The condition is excellent. The creations of Thorn Glass Studio have been exhibited around the world. https://www.theclayandglass.ca/wp-content/uploads/2011/03/HeatherWoodJohnKepkiewicz_July3-Sept232004.pdf