Glassine is a smooth and glossy paper that is air, water, and grease resistant. It is usually available in all sizes...
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Glassine Envelopes A smooth, glossy finish gives these envelopes a high-end feel. Gold and silver shine through the transparent material, providing an enticing display. Glassine envelopes come open-ended with no adhesive on the flap. This works great for easy packing of jewelry supplies like beads, backings, and hooks.