What Makes Edible Glitter Shiny? The Mica Science

What makes edible glitter shiny? Not gold — layers. Mineral flakes stack reflections until your eye reads shimmer. Edible glitter shines because of stacked layers, not metal. Every shade is built on mica, a mineral that splits into thin, flat flakes. Those flakes carry whisper-thin coats of mineral pigment — titanium dioxide and iron oxide in the gold — so light bounces off every layer and reaches your eye as shimmer. Fine 5-25 micron luster dust reads as a smooth sheen; 50-500 micron flakes twinkle one by one. In this episode: - The gold recipe, read straight from the safety data sheet — mica, titanium dioxide, iron oxide — and why there is no metallic gold in the jar. - Why luster dust glows while drink glitter twinkles: the 5-25 vs 50-500 micron difference, minus the jargon. - How single-ingredient shades like Iridescent Butterfly and Magic Rainbow shift color with zero added pigment. - Dana's winning round: the room is an ingredient — how to stage sparkle so it actually shows. - A sunny-window test that previews any jar's sparkle before you ever open it. Honest skip list: if you want the mirror shine of real gold (that's edible gold leaf, a different product), if your event happens in low light, or if you're hoping it adds flavor — it's flavorless on purpose. The reference jar from this episode: MONÉGASQUE Gold Edible Glitter (15 g luster dust) on Amazon — about $15 at the time of publish. Curious about the rules behind it? Mica-based pearlescent pigments are listed in the FDA's color-additive regulations at 21 CFR 73.350. Produced with AI-crafted hosts. Full transcript on the episode page. New questions answered every week at The Monégasque Table.