Seashells like scallops, conch and clam because they are deep enough to fill with wax.
Paraffin wax or old candles
Double boiler or 2 pots that fit inside each other
Metal wick holders
Pencil or small stick
First, soak the seashells in a mild solution of bleach and water and scrub gently with a sponge. Let dry. Next, melt the wax in the double boiler and add some color. Stir to mix. You may want to use corals or sea foam greens to compliment the seashells. Cut a piece of wick the desired length and attach to the wick holder. Pour a drop of wax into the shell and place wick and wick holder on top. Let it dry a bit. This will secure the wick and keep it from floating to the top when you pour the rest of the wax. Then pour the wax to just below the top. Wrap wick around the pencil and let it rest on top. When wax is hardened, remove wick from pencil and trim.