Natural Agate Coaster. The edges of each piece are electroplated. Not gold leaf or gilded, which may rub off with beautiful thick metallic gold. * Sold as a set of 4 pieces * 3.5" to 4.5" Diameter. 8mm thick - Due to the hand hewn agate, expect variation in the appearance of each unique piece. - Natural stone will vary in size, colour, and appearance. - Each piece has 4 rubber pads to avoid scratching the surface. - Can do Gold, Silver and Copper edgings. - All platters and coasters are food safe.