All golds are made from 24 carat gold leaf. A big saving on first quality golds, they are seconds because they may be irregular in size, slightly chipped or scratched. They still look wonderful! The imperfections are part of the charm and can give your art an 'antiqued' look.
100g gold is very approximately 70-80 pieces and, as being seconds, they vary in size.
The Yellow Gold is a very bright gold on amber glass.