Before anything else, pour your sugar and water into a large saucepan. Afterward, bring sugar and water to a boil. Be sure to stir constantly. Also, when your syrup is boiling, lower the heat. Then, add the food coloring and mint extract.
4 cups of sugar, 2 cups of water, 5-6 drops of blue food coloring, 1 tbsp of mint extract
After that, roll your fondant into a 0.3 cm thick. Then, make sure to roll it out on parchment paper to minimize sticking. Afterward, cut it into a circular shape with the same size as your egg mold's interior. Also, be sure to grease your egg molds using a non-stick cooking spray. Next, set them aside.
One container of white fondant
Then, melt one bag of your chocolate morsels. And be sure to fill your egg molds. Also, place your cut fondant inside the molds, pressing it inwards then outwards. Afterward, pour your syrup about 3/4 inch high inside your egg molds. After that, cover your egg mold with tin foil. And do not forget to allow it to rest overnight. Likewise, you can let it rest even longer if desired. In addition to that, you can keep the remaining sugar syrup. And set it aside for later.
Five bags of chocolate morsels
Next, you will begin to notice that crystals will form after a few days. Also, pour the excess syrup from your egg mold. Then, remove your edible geode from the egg mold.
Afterward, you may trim and cut off extra chocolate and fondant from your edible geode to attach both sides. Also, you can melt another bag of chocolate. Then, spread the chocolate on one side of your geode to connect both. In addition, pour more syrup on one side before attaching both sides. Also, coat your attached geode with more chocolate.
Then, when your chocolate geode seals, rotate it every other day for about 3 to 6 months. Also, add more chocolate layers if you see leakage.
Finally, when opening your geode, be cautious as it is hard as the real geode crystals.