Alcohol Ink vs. Mica vs. Liquid Pigment: Which to Use

Sooner or later every resin maker stands in front of three little bottles asking the same question: which one of you is right for this piece? They all “color resin,” but they behave so differently that picking wrong changes the whole result — sometimes in a good way, usually not the way you pictured.

Here’s how the big three actually compare, after years of using all of them side by side.

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Mica powder: shimmer and depth

Mica is suspended mineral particles, so light doesn’t just pass through the piece — it bounces around inside it. That’s the pearly, slightly magical depth you see in most resin jewelry, and no other colorant fakes it.

It’s also the most forgiving of the three. It can’t realistically stop your cure; worst case you go opaque and a little thick. Dose is about 1/4 tsp per 1 oz (30 ml), clump-mash it in a splash of resin first, done. Full mica technique here.

Weaknesses: it settles slightly in thin pours, and it can’t do flat, even, non-shimmery color. Sometimes you want plain solid red. Mica doesn’t do plain.

Liquid pigment: the professional’s solid color

Pigment paste in a resin-friendly carrier. Mixes in smooth, distributes perfectly evenly, and — this is its superpower — it’s repeatable. Batch after batch comes out the same shade, which matters the day someone orders three matching sets of earrings.

That happened to me last spring: a bride wanted five identical dusty-rose pendant sets for her bridesmaids. With mica I’d have been eyeballing shimmer density across five batches and praying. With liquid pigment I wrote down “4 drops rose + 1 drop white per 2 oz” and made five clones. Boring, reliable, exactly what the order needed.

The watch-out is overdosing — it blends in so smoothly you don’t feel the quantity building. Stay near 2–3 drops per ounce and under 6% total weight.

Alcohol ink: movement and accident

Ink is dye dissolved in alcohol, and in resin it does things the other two physically can’t — it flows, blooms, feathers, and keeps moving after you’ve stepped away. Petri-dish art is alcohol ink sinking through resin dragged by a drop of white. Those dreamy sunset pendants: layered ink fades.

It’s a collaborator, not a tool. You set conditions; it improvises. About a third of my ink pieces surprise me, and maybe a tenth outdo what I’d planned.

Two real limitations. Alcohol slows the cure, so 2–3 drops per ounce is the line. And some colors are not lightfast — my sepia suncatcher went ghost-pale after one summer in a south window. For anything living in sunlight, I’ve switched to mica and pigments entirely.

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Same mold, three different pieces

The clearest way I can put the difference: imagine one teardrop pendant mold poured three times in blue.

With mica — a deep ocean-blue with internal shimmer, looks lit from within, reads as jewelry immediately. With liquid pigment — a clean, even, solid blue, modern and graphic, perfect if you’re building a matched product line. With alcohol ink — translucent swirls, no two ever alike, the kind of piece someone picks up at a market and turns in the light for a full minute.

None is better. They’re three different products from one mold — which, from a seller’s point of view, is the cheapest product-line expansion there is. One good pendant mold, three colorants, three collections.

Buying order, if you’re starting out

Mica first — most range, hardest to ruin. White and black liquid pigment second, because opaque white unlocks pastels and clean solids. Inks last, and only when a project actually calls for flow effects.

You’ll end up with all three eventually. Everyone does. But that order spreads the spending across months instead of one intimidating cart, and each purchase lands when you actually know what you need it for. (Longer buying guide: best pigments and colorants for resin.)

They also stack in one piece, by the way — an opaque pigment base layer, a mica middle, ink accents on top. Layered pours at gel stage, roughly 3–5 hours apart. That’s when this stops being three competing bottles and starts being a palette.

Which camp are you in right now — team shimmer, team solid, or team chaos? I drift between all three depending on the season, and I’ve noticed winter pushes me toward the inks. No idea why. Maybe the flow makes up for everything outside being frozen.

— Nikolai