These coasters are made 100% epoxy resin. If you like the style of these coasters but would like a different colour scheme that completely doable,
A rainbow ink-drop resin coaster that I made! Finally mastered the technique! : r/ResinCasting
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One of a kind Alcohol Ink Resin Coaster – remillART
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Petrified Rainbow Resin Coasters with Alcohol Ink DIY - Resin