Iridescent Dark Green Glass Mosaic Gems - Round Top, Flat Bottom Art Crafts Vase Filler Decor Width: .5 - .75 Inches Choice of: 18 oz (100 pieces) = 1.125 lbs = $15 90 oz (500 pieces) = 5.625 lbs = $65 Each gem varies in size and measures approximately 1/2 to 3/4 inches in diameter. These gems were made by Vacor for Mega Marbles and manufactured in Mexico. They are now retired, so are often sought after for their quality and beauty. Made of a transparent, high quality, silica glass and are a lovely dark green color with a glistening, iridescent finish. Can be used for so many purposes due to the smooth back. Home Decor, Weddings, Events, Crafts, etc. Very easy to work with making them perfect for arts and crafts, or use them as reusable vase fillers. The white spots are light flashing off the gems when photographed and are not damage or color variation.