Raspberry Citrus Mocktail

Ingredients (7)

• ✓ 5 each fresh raspberries
• + 6 tablespoons water, divided add to pantry
• + 1 teaspoon honey, or to taste add to pantry
• ✓ ¾ teaspoon white sugar, or to taste
• + 1 cup ice cubes add to pantry
• + ½ (12 fluid ounce) can grapefruit-flavored seltzer (such as Sanpellegrino®) add to pantry
• + 1 calamansi lime, halved add to pantry