These fused glass coasters were made with a blue opal glass and a crackle iridized glass, which is a metallic layer on top of the glass. The iridized coating is sparkly and shows up better in the second picture. This iridized glass is fun to work with. I have made fused glass coasters in red, black, white and turquoise translucent. I have made fused glass plates in red and blue opal.
Christine — Glass Artist
Click here to see more of my Fused Glass Coasters: http://www.mastersglassart.com