Add the frozen berries, honey, and fruit juice into the blender.
Secure the lid on the blender and blend on high until the mixture is smooth and slushy, with no large chunks remaining.
Stop the blender and add the crushed ice directly into the mixture.
Blend again until the ice is thoroughly incorporated and the texture is thick, creamy, and icy.
Turn off the blender and give the slushie a gentle stir to ensure even consistency.
Pour the vibrant red or purple mixture into glasses, revealing the icy, textured surface.
Serve immediately with a straw or small spoon for a refreshing, frozen treat.