One day in advance, make candy shards. Melt white Candy Melts candy according to package instructions. Tint following color combinations above.
Using spatula, swipe rows of teal, dark coral and light coral candy onto cookie sheet. Drag swipe with icing comb to add texture. Let set at room temperature until set, about 10 to 15 minutes. Spread melted white candy on back of candy swipe; chill until firm, 10 to 15 minutes.
For swirled pieces, drop small amounts of melted candy on cookie sheet and swirl together with toothpick. Chill until firm, 10-15 minutes.
For solid pieces, swipe dark coral and teal candy separately onto cookie sheet and sprinkle with white nonpareils and bubblegum and blue raspberry sugar pearl sprinkles. Chill until firm, about 10-15 minutes.
Break candy into different sized shards, about 13 to 15 shards total.