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This is a paid asset, but now you can download Treasure Chest Icons Free.
Treasure Chest Icons v1.0
Set of 5 treasure chest icons, 5 keys icons, 4 gems icons and 1 coin icon. All icons are of a high quality.
– 5 treasure chest icons (PNG);
– 5 keys icons 512×512 pixels size(PNG);
– 4 gems icons 512×512 pixels size(PNG);
– 1 coin icon 512×512 pixels size(PNG).