Simply GLUE the cup to the saucer for a nice Candle Holder. A GREAT way to use Old or Chipped China... haven't any ?? The THRIFT STORES are full of them. I love how the cup handle automatically becomes a handle for the carrying of a candle too. Nice !
DIY VINTAGE GLASSWARE ... used Elmer's Glue poured into a cup and then added small amounts of Wilton's Food Coloring until I liked the color Then I used a soft paint brush . after it dries it really dries transparent. You don't need a sealer. If you do it for a vase you still need to paint the outside because it is not water proof. What kind of Elmer's Glue did you use? White Glue-All