Sealing a diamond painting is not always necessary, but it can help to protect the finished artwork and keep the diamonds in place over time. There are a few different methods for sealing a diamond painting, including using spray sealers, brush-on sealers, and glue.

Spray sealers are a popular option for sealing diamond paintings, as they are quick and easy to use. Simply hold the can of sealer about 12 inches away from the painting and spray a light, even coat over the entire surface. Allow the sealer to dry completely before handling or displaying the painting.

Brush-on sealers are another option for sealing diamond paintings. Apply the sealer to the surface of the painting using a soft brush, being careful not to dislodge any of the diamonds. Allow the sealer to dry completely before handling or displaying the painting.

Glue is a third option for sealing diamond paintings, although it is less commonly used. To seal a diamond painting with glue, apply a thin layer of clear-drying craft glue over the surface of the painting using a foam brush. Be careful not to apply too much glue or it may seep into the cracks between the diamonds. Allow the glue to dry completely before handling or displaying the painting.

Overall, whether or not to seal your diamond painting is a matter of personal preference. Sealing can help to protect the diamonds and keep them in place over time, but it is not strictly necessary if you plan to display the painting in a frame or otherwise handle it carefully.