Another critical feature is the width of the ashtray should be enormous enough to support a cigar on a horizontal level otherwise the cigar would be sloping down with the coal resting in the base of the tray. You would find ashtrays made from glass, porcelain, stoneware, silver and even aluminum. They give you a more complex look. The clear crystal refracts light and is a gorgeous accessory for your house or office.
For those that cannot endure smoke this could be a life saver for them and also for smokers as they can smoke without oppressing their fellow companions.